S21 XP Hyd.
User Guide

Overview

The S21 XP Hyd. server is one of BITMAIN’s latest products. The APW11 power supply is a crucial component of the S21 XP Hyd. server. All S21 XP Hyd. servers are thoroughly tested and configured before shipping to ensure easy setup. Caution:

1. Please refer to the layout above to place your equipment in their designated locations to prevent any damage.
2. The equipment must be connected to an earthed mains socket. The socket shall be installed near the equipment and shall be easily accessible.
3. DO NOT remove any screws or cables attached to the product.
4. Please note that the actual server shall prevail.
5. There must be an external specific surge protection device complying with IEC/EN 61643-11 either in front of the power supply or outside the end system (in a separate distribution box or as part of the building installation).
6. DO NOT plug or remove the device when it is powered on.
7. The external power supply must have a disconnecting device, which can disconnect L1, L2, and L3 simultaneously.
8. The server needs to be manually restarted when the hashrate is abnormal.
9. The S21 XP Hyd. server shall be used simultaneously with the ANTSPACE seiries. Please click BITMAIN Shop for more details on ANTSPACE seiries.

1.1 S21 XP Hyd. Server components
The main components and control panel of the S21 XP Hyd. server are shown in the figure below.Figure 1-2 illustrates a type of the S21 XP Hyd. server control panel. Note that the SD card slot can be replaced with a Micro USB slot.
The following sections provide a detailed description of the function and specific role of each component.
APW11 Power Supply:

The APW11 power supply serves as the energy source for S21 XP Hyd. server.
NOTE:

• The power connector is designed to be waterproof.
• For detailed parameters, please refer to the specifications below.

Bend Pipes, Water Inlet and Outlet:
Bend Pipes, water inlet, and water outlet refer to components in a cooling system that control the flow of coolant into and out of the system
NOTE:

• When inserting or removing the bend pipes, ensure they are securely tightened.

Control Panel:
Ethernet mode:
The device is equipped with an RJ45 Ethernet interface that supports data transfer speeds of 10/100 Mbps.
LED Indicators:
The green LED indicates normal operation of the Ethernet interface.
The red LED signifies a fault condition within the Ethernet interface, requiring attention.
Function Activation:
The IP report function can be activated by pressing the raised button.
The reset function can be activated by pressing the recessed button, allowing for quick troubleshooting and maintenance.
SD Card/Micro USB Slot:
The SD Card/Micro USB slot can be used to connect a SD card or micro USB interface for data transfer.
Hashboards Housing:
The hashboards housing is an enclosure designed to store and protect the hashboards. Its primary functions include providing structural support, shielding the hashboards from external environmental factors, and ensuring proper heat dissipation and electrical connections.
1.2 Specifications of Partial Components
Customers can purchase the following parts for the S21 XP Hyd. on our official website at https://www.bitmain.com. The specifications for the above parts can be found on the parts sales page of our official website.
Table 1-1 Specifications of Partial Components

Item Number	Accessories	Picture
1	Control Board for Hyd. Series
2	APW111721c,17V21.6V,RSPri_V1.25，EMC
3	Manifold (for 3 hashboards)
4	Corrugated Pipe, D10, L=210mm, Transparent FEP

1.3 Product Specifications
Table 1-2 Product Glance

Product Glance	Value
Model	S21 XP Hyd.
Sub	473T
Version	10
Crypto algorithm| coins	SHA256| BTC/BCH/BSV
Typical hashrate, TH/s(1-1)	473
Power on wall @35℃(1-2), Watt(1-1)	5676
Power efficiency on wall@35℃(1-2), J/T(1-1)	12.0

Table 1-3 Detailed Characteristics of Product

Detailed Characteristics	Value
Power Supply
Phase	3
Input voltage, Volt(2-1)	380~415
Input frequency range, Hz	50~60
Input max current, Amp	12
Hardware Configuration
Network connection mode	RJ45 Ethernet 10/100M
Server size (length*width*height, w/o package), mm	339*173*207
Server size (length*width*height, with package), mm	570*316*430
Net weight, kg	13.8
Gross weight, kg	15.7
Environment Requirements

Inlet coolant temperature, °C	20~50
Coolant flow, L/min	8.0~10.0
Coolant pressure, bar	≤3.5
Working coolant	Antifreeze/ Pure water/Deionized water
Coolant pH value	Antifreeze: 7.0~9.0 Prue water: 6.5~7.5 Deionized water：8.5~9.5
Diameter of coolant pipe connector, mm	OD10
Storage temperature, °C	–20~70
Operation humidity(non-condensing), RH	10~90%

NOTE:
(1-1) The hashrate value, power on wall, and power efficiency on wall are all typical values.
The actual hashrate value fluctuates by ±3%, and the actual power on wall and power efficiency on wall fluctuate by ±5%.
(1-2) Inlet coolant temperature.
(2-1) Caution: Wrong input voltage may cause server damaged.
(2-2) For detailed working coolant use and maintenance instructions, please refer to Chapter 2.1 “Requirements of Coolant”.

Cooling System Requirements

2.1 Requirements of Coolant
When purchasing coolant, it is essential to focus on the relevant parameters in Table 2-1.
If the requirements are not met, it is necessary to consider refilling and replacing the coolant as appropriate.
(1) The primary focus during regular inspection of coolant should be the pH value. It is not recommended to use the coolant when the pH value is below 7 (a pH indicator can be added to the coolant. When the pH is below 6.8, the coolant will change color for easy observation); the inspection method is shown in the table below.
(2) Secondary focuses during regular inspection of coolant include freezing point, ethylene glycol ratio, total hardness, etc. In the later stage, attention should be paid to whether the content of elements such as Al, Fe, and Cu increases or not, as an increase indicates that contact corrosion has already occurred; the inspection method is shown in the table below.
It is recommended to regularly add corrosion inhibitors according to the supplier’s requirements to maintain the coolant.
Table 2-1 Recommended Standard Parameters for Coolant

Items	Index		Recommended reference standards for inspection
Color	Significant color		Visual inspection
Exterior	No odor, sediment, or suspended solids		Visual inspection
Freezing point	＜Local minimum freezing temperature
Boiling point	108°C (low temperature type)
pH value	7-9
Reserve alkalinity	≥4ml (organic formula) ≥9ml (including inorganic formula)
Total hardness	<120 mg/l
Main element content	B	<20mg/kg
	Si	<20mg/kg

	P	<20mg/kg
	Mo	<20mg/kg
	Ca	<20mg/kg
	Al3+	<50mg/L
	Fe2+	<50mg/L
	Cu2+	<50mg/L

Table 2-1 provides the medium requirements for working environments with temperatures below 0°C like glycol. Table 2-2 illustrates the relationship between the concentration of glycol and its freezing point.
Table 2-2 Glycol Refrigerant Concentration vs. Freezing Points

Glycol concentration		Freezing point, °C
Mass concentration, %	Volume concentration, %
0	0	0
5	4.4	-1.4
10	8.9	-3.2
15	13.6	-5.4
20	18.1	-7.8
25	22.9	-10.7
30	27.7	-14.1
35	32.6	-17.9
40	37.5	-22.3
45	42.5	-27.5
50	47.6	-33.8
55	52.7	-41.1
60	57.8	-48.3

If the working environment temperature is consistently above 0°C, deionized water or purified water can be used as the secondary side internal circulation medium with corresponding requirements listed in Table 2-3.
Table 2-3 Recommended standards for deionized water

Index	Deionized water	Reference standards	Remarks
pH value	8.5-9.5	Intel 632983
Sulfide	<1 ppm	TC9.9/Intel 632983

Sulfate	<10 ppm	TC9.9/Intel 632983
Chloride	<5 ppm	TC9.9/Intel 632983
Bacterial community	<100 CFUs/ml	TC9.9/Intel 632983
Total hardness (as CaCO3)	<20 ppm	TC9.9/Intel 632983
Conductivity	<20us/cm (reference value, not mandatory)	TC9.9	High conductivity is not necessarily unacceptable, such as 1000us/cm, as corrosion inhibitors and fungicides will both lead to an increase in water conductivity. It is necessary to understand the reasons behind the sharp increase in conductivity trend during circuit operation.
Residues after evaporation	50 ppm	TC9.9/Intel 632983
Turbidity	<20 NTU	TC9.9/Intel 632983
Iron content	0.1 ppm	Industry standards
Copper content	10 ppm	Industry standards
Carbon steel corrosion rate	3mpy (0.075mm/a)	GB/T 50050- 2017
Corrosion rate of copper or stainless steel	0.2mpy (0.005mm/a)	GB/T 50050- 2017

NOTE:
The coolant must be configured strictly in accordance with the lowest possible temperature in the environment. If the coolant is not configured according to the instructions and the ambient temperature is lower than the freezing point of the coolant, causing the heat exchanger to freeze and crack, our company will not bear
2.2 Maintenance Requirements of Cooling System
As the core unit of the container water cooling system, it is recommended to regularly track and record the coolant, at least once a year (pH value should be tested every six months).
To ensure long-term reliable operation, when using deionized water or purified water as the internal circulation medium, check every 1-2 weeks and replace the internal coolant every 1-2 months.
When using deionized water as the internal circulation medium, please strictly comply with the usage environment above 0°C. Otherwise, if the temperature is below freezing point, unexpected power outage will cause the internal pipes of the system to freeze and cause the pipes to burst.
When using deionized water/pure water, the pH value, conductivity, and related index parameters of the coolant must be regularly tested and recorded. When the requirements in Table 2-3 are exceeded, or there are abnormal changes, new deionized water/pure
water that meets the requirements must be replaced in time.

Installation and Rack Management

3.1 Installation Location
The S21 XP Hyd. should be installed on the racks in our water-cooled container, with the water and electrical interfaces facing the aisle of the water-cooled container. 3.2 Loading Hydro-cooling miner
First connect the water, then the power supply, and proceed from the top to the bottom in sequence.

1. Water flows: First, close all the inlet and outlet water valves, then insert the water pipes into the machine’s quick connectors, with the upper connector for inlet and the lower one for outlet. Make sure the water pipes are fully inserted to ensure a tight seal. Then, open all the water pipe valves and check for any leaks.
2.  Power: The miner’s power plug is an aviation plug, and the button can be fully reset to complete insertion.
3.  Network: Insert the corresponding network cable below the miner into the miner, and each network cable has a location code.

3.3 Unloading Hydro-cooling miner
First cut off the power, then cut off the water, from the lower level to the higher level in sequence.

1. Power: Turn off the corresponding air switch of the miner.
2. Water flows:
   Step 1: close all the inlet and outlet valves of the miner to ensure they are fully closed. Then, slowly pull out the inlet and outlet water pipes, and lower the water pipe mouth to allow the liquid inside the miner to flow into the bucket until no water droplets flow out.
   Step 2: check the power plug and network cable head, confirm that there is no liquid on the head, and then unplug and remove the miner.
   Step 3: unplug the water pipe and block the quick connect plug of the miner with a water stop plug. The residual miner coolant should be left in the miner (if repair is required, all the miner coolant should be drained and the residual coolant inside the miner should be blown dry with an air pump). After removal from the rack, the water inlet and outlet of the original miner position should be kept connected.
3. Network: Pull out the network cable from the miner and bend it down to avoid scratching the network cable when removing the miner.
4. After all the above operations are completed, the miner can be taken out and removed from the rack.

3.4 Precautions

1. Before water filling: Check the water pipes to ensure they are securely connected to prevent leaks during water filling.
2. Power connections: Ensure that the power connections are securely plugged in to avoid sparks when powering on. Before plugging in or unplugging the AC power input line, please ensure that the server is powered off.
3. Powering on: First, fill the system with water, wait for 20 seconds, and then confirm that the flow rate and water temperature meet the standards before powering on.
4. Powering off: First, disconnect the power, wait for 20 seconds, and then confirm that the server is powered off before disconnecting the water.
5. In case of water spillage: If there is water splashing or spraying from the watercooled server,do  not power on the device directly. Please contact the after-sales service center.
6. Operating below 0°C : If the water-cooled server operates in an environment below 0°C, antifreeze must be used inside; otherwise, there is a risk of freezing and cracking the server.
7. In case of thunderstorms: Unplug the device during thunderstorms or when not in use for an extended period. This will protect the server from damage caused by power fluctuations. Do not overload the power outlet and power cord. Overloading may result in fire or electric shock.
8. In case of strange odors, sounds, or smoke: If the server emits strange odors, sounds, or smoke, immediately disconnect the power and contact the service center. Under no circumstances should you hit or drop the server. Ensure that all connection cables are securely connected and properly aligned.
9. The miner can only be energized after all of the above operations have been completed.
10. When performing batch shelving operations: it is necessary to load the miner from the upper layer to the lower layer in order to avoid the impact of residual water in the water pipe on the miners in the lower layer.
11. For transfer in batches, all the cooling liquid of the miner should be discharged, dried with an air pump, and packaged in original carton boxes for transportation and transfer.

Setting up the Server

NOTE:
The file IPReporter.zip is supported by Microsoft Windows only.
4.1 Setting up the Server
To set up the server:
4. Go to the following site:
https://file12.bitmain.com/shop-product/firmware/IP%20Reporter.zip.
If the link is invalid, please visit the official firmware download page (https://service.bitmain.com/support/download) and select as shown in the image to download IPReporter.zip.Download the following file: IPReporter.zip.
Extract the file.
NOTE:
The default DHCP network protocol distributes IP addresses automatically
7. Right-click IPReporter.exe and run it as Administrator.
8. Select one of the following options:
■ Shelf, Step, Position – suitable for farm servers to mark the location of the servers.
■ Default – suitable for home servers.
9. Click Start.10. On the control panel, click the IP Report button (its location is shown in Figure 1-2).
Hold the button down until it beeps (about 5 seconds).
The IP address will be displayed in a window on your computer screen.11. In your web browser, enter the IP address provided.
12. Proceed to login using root for both the username and password.
13. In the Protocol section, you can assign a Static IP address (optional).
14. Enter the IP address, Subnet mask, gateway and DNS Server.
15. Click “Save”.
16. Click https://support.BITMAIN.com/hc/en-us/articles/360018950053 to learn more about gateway and DNS Server.4.2 Configuring the Server
Setting up the Pool
To configure the server:

1. Click Settings as below.
2. Set the options according to the following table:
   

   Option	Description
   Mining address	Enter the address of your desired pool. The S21 XP Hyd. servers can be set up with three mining pools, with decreasing priority from the first pool (pool 1) to the third pool (pool 3). The pools with low priority will only be used if all higher priority pools are offline.
   Name	Your worker ID on the selected pool.
   Password (optional)	The password for your selected worker.

3. Click Save after the configuration.

4.3 Monitor your Server
To check the operating status of your server (taking S21 XP Hyd. 473T as an example):

1. Click dashboard marked below to check the server status.
2. Monitor your server according to the descriptions in the following table:
   

   Option	Description
   Number of chips	Number of chips detected in the chain.
   Frequency	ASIC frequency setting.
   Real Hashrate	Real-time hashrate of each hash board (GH/s).
   Inlet Temp	Temperature of the inlet (°C).
   Outlet Temp	Temperature of the outlet (°C).
   Chip state	One of the following statuses will appear: ●  The Green Icon – indicates normal ●  The Red Icon– indicates abnormal

3. Monitor your server according to the LED indicator light:
   

   Status	Fault Indicator(RED)	Normal Indicator(GREEN)
   Normal	OFF	ON
   Over temperature	ON	OFF
   Network disconnection	ON	OFF

NOTE:

• The frequency of the S21 XP Hyd. server is fixed at 495 MHz. The firmware will stop running when the Temp (PCB) reaches 80℃ or the water temperature is either greater than 50℃ or lower than 20℃. An error message, “Fatal Error: Temperature is too high!” will be shown at the bottom of the Kernel log page.

4.4 Administering your Server 

4.4.1 Checking your Firmware Version
To check your firmware version:

1. Enter the backend of your server, find the firmware version at the bottom.
2.  File System Version displays the date of the firmware your server uses. In the example below, the server is using firmware version 202410111643.

4.4.2 Upgrading your System
Caution: Make sure that the S21 XP Hyd. server remains powered during the upgrade process. If power fails before the upgrade is completed, you will need to return it to BITMAIN for repair.
To upgrade the server’s firmware:

1. In System, click Firmware Upgrade.
2. For Keep Settings:
   (1) Select “keep settings” to keep your current settings (default).
   (2) Unselect “keep settings” to reset the server to default settings.
3. Click the button and navigate to the upgrade file. Select the upgrade file, then click Update.
4. When the upgrade is completed, restart the server. It will return to the settings page.
5. Click one of the following options:
   ■ Reboot – to restart the server with the new firmware.
   ■ Go Back – to continue mining with the current firmware. The server will load the new firmware next time it is restarted.

4.4.3 Modifying your Password
To change your login password:

1. In System, click the Password tab.
2. Set your new password, then click Save.

4.4.4 Restoring Initial Settings
To restore your initial settings

1. Turn on the server and let it run for 5 minutes.
2. On the controller front panel, press and hold the Reset button for 10 seconds.

Caution: Resetting your server will reboot it and restore its default settings. The red LED will automatically flash once every 15 seconds if the reset is operated successfully.
4.4.5 Error Code
Here is the server error code and the corresponding reasons and suggestions:

Error Code	Reason	Suggestion
R:1	Average total hashrate is low	Update the firmware to the latest version, replace the power supply, or return to factory for repair
R1:1	Chain1 is broken or has low hashrate	Check if chain1 connection is normal, update the firmware to the latest version, replace the hashboard, or return to factory for repair
R2:1	Chain2 is broken or has low hashrate	Check if chain2 connection is normal, update the firmware to the latest version, replace the hashboard, or return to factory for repair
R4:1	Chain3 is broken or has low hashrate	Check if chain3 connection is normal, update the firmware to the latest version, replace the hashboard, or return to factory for repair
R8:1	Chain4 is broken or has low hashrate	Check if chain4 connection is normal, update the firmware to the latest version, replace the hashboard, or return to factory for repair
J1:1	Chain1 has bad ASIC	Update the firmware to the latest version, replace the power supply, or return to factory for repair
J2:1	Chain2 has bad ASIC	Update the firmware to the latest version, replace the power supply, or return to factory for repair
J4:1	Chain3 has bad ASIC	Update the firmware to the latest version, replace the power supply, or return to factory for repair

J8:1	Chain4 has bad ASIC	Update the firmware to the latest version, replace the power supply, or return to factory for repair
N:1	Average total hashrate exceeds the sale hashrate too much	Update the firmware to the latest version
N:2	Frequency is reduced too much	Update the firmware to the latest version
V:1	Power initialization error or power output voltage error	Check power output wiring, update the firmware to the latest version, replace the power supply, or return to factory for repair
V:2	Power supply is not calibrated	Update the firmware to the latest version, replace the power supply, or return to factory for repair
F:1	Fan error	Check if the fan connection is normal, replace the power supply, or replace the fan
F1:1	Fan1 is not detected or its speed is low	Check if the fan1 connection is normal, replace the power supply, or replace the fan
F2:1	Fan2 is not detected or its speed is low	Check if the fan2 connection is normal, replace the power supply, or replace the fan
F4:1	Fan3 is not detected or its speed is low	Check if the fan3 connection is normal, replace the power supply, or replace the fan
F8:1	Fan4 is not detected or its speed is low	Check if the fan4 connection is normal, replace the power supply, or replace the fan

J:8	The number of hashboards is less than the design	Check if the hashboard connection is normal, or replace the hashboard
P:1	High temperature protection	Check if the environment temperature is normal, or check if the gel on the hashboard is effective
P:2	Low temperature protection	Check if the environment temperature is normal
J1:4	Chain1 EEPROM data error	Redo the factory test for chain1
J2:4	Chain2 EEPROM data error	Redo the factory test for chain2
J4:4	Chain3 EEPROM data error	Redo the factory test for chain3
J8:4	Chain4 EEPROM data error	Redo the factory test for chain4
J:6	Temperature sensor error	Check if the hashboard connection is normal, update the firmware to the latest version, replace the hashboard, or return to factory for repair
J1:5	Chain1 PIC error	Check if chain1 connection is normal, update the firmware to the latest version, replace the hashboard, or return to factory for repair
J2:5	Chain2 PIC error	Check if chain2 connection is normal, update the firmware to the latest version, replace the hashboard, or return to factory for repair

J4:5	Chain3 PIC error	Check if chain3 connection is normal, update the firmware to the latest version, replace the hashboard, or return to factory for repair
J8:5	Chain4 PIC error	Check if chain4 connection is normal, update the firmware to the latest version, replace the hashboard, or return to factory for repair
M:1	Memory allocation error	Update the firmware to the latest version, replace the control board, or return to factory for repair
J1:2	The number of chain1 chips is less than the design	Check if chain1 connection is normal, update the firmware to the latest version, replace the hashboard, or return to factory for repair
J2:2	The number of chain2 chips is less than the design	Check if chain2 connection is normal, update the firmware to the latest version, replace the hashboard, or return to factory for repair
J4:2	The number of chain3 chips is less than the design	Check if chain3 connection is normal, update the firmware to the latest version, replace the hashboard, or return to factory for repair
J8:2	The number of chain4 chips is less than the design	Check if chain4 connection is normal, update the firmware to the latest version, replace the hashboard, or return to factory for repair
L1:1	Chain1 voltage or frequency exceeds the limit	Update the firmware to the latest version, or return to factory for repair
L2:1	Chain2 voltage or frequency exceeds the limit	Update the firmware to the latest version, or return to factory for repair

L4:1	Chain3 voltage or frequency exceeds the limit	Update the firmware to the latest version, or return to factory for repair
L8:1	Chain4 voltage or frequency exceeds the limit	Update the firmware to the latest version, or return to factory for repair
L:2	Cannot find the mixed level	Update the firmware to the latest version, or return to factory for repair
L1:2	Chain1 voltage or frequency mismatch	Update the firmware to the latest version, or return to factory for repair
L2:2	Chain2 voltage or frequency mismatch	Update the firmware to the latest version, or return to factory for repair
L4:2	Chain3 voltage or frequency mismatch	Update the firmware to the latest version, or return to factory for repair
L8:2	Chain4 voltage or frequency mismatch	Update the firmware to the latest version, or return to factory for repair
N:4	Network connection is lost	Check if the network connection is normal

Environmental Requirements

Please ensure that your server operates in accordance with the following environmental requirements.
5.1 Basic Environmental Requirements
5.1.1 Site Requirements of the Server Running Room
Please ensure that the server operating room is kept away from industrial pollution sources:

1. For heavy pollution sources such as smelters and coal mines, maintain a distance of more than 5 km.
2. For moderate pollution sources such as chemical industries, rubber, and electroplating industries, maintain a distance of more than 3.7 km.
3. For light pollution sources such as food factories and leather processing factories, maintain a distance of more than 2 km. If unavoidable, choose a site in the perennial upwind direction of the pollution source.

Please do not set up your location within 3.7 km of the seaside or a saltwater lake. If this is unavoidable, ensure that the structure is as airtight as possible and equipped with air conditioning for cooling.
5.1.2 Electromagnetic Environmental Conditions
Please keep your site away from transformers, high-voltage cables, transmission lines, and high-current equipment. For example, there should be no high-power AC transformers (>10KA) within 20 meters, and no high-voltage power lines within 50 meters.
Additionally, keep your site away from high-power radio transmitters; for example, there should be no high-power radio transmitters (>1500W) within 100 meters.
5.2 Other Environmental Requirements
The server running room shall be free of explosive, conductive, magnetically conductive and corrosive dust. The requirements of mechanical active substances are shown below.
5.2.1 Mechanical Active Substances
Table 5-1 Requirements of mechanical active substances

Mechanical Active Substance	Requirement
Sand, mg/m3	≤30

Dust (suspended), mg/m3	≤0.2
Dust (deposited) , mg/ m2h	≤1.5

5.2.2 Corrosive Gas
Table 5-2 Requirements of corrosive gas

Corrosive Gas	Unit	Concentration
H2S	ppb	< 3
SO2	ppb	< 10
Cl2	ppb	< 1
NO2	ppb	< 50
HF	ppb	< 1
NH3	ppb	< 500
O3	ppb	< 2
Note: ppb (part per billion) refers to the unit of concentration, 1ppb stands for the volume ratio of part per billion.

Regulations

6.1 Federal Communications Commission (FCC)
FCC Notice:
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
Note:
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in
a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense.
Caution:
Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.
6.2 Industry Canada
CAN ICES-003(A) / NMB-003(A)
6.3 European Community
Warning: Operation of this equipment in a residential environment could causeradio interference.
UAB Bitmain Development Lithuania
Vilnius, Bistrycios g.40-21
EU WEEE
Disposal of Waste Equipment by Users in Private Household in the European
Union:
This symbol on the product or on its packaging indicates that this product must not be disposed of with your other household waste. Instead, it is your responsibility to dispose of your waste equipment by handling it over to a designated collection point for the recycling of waste electrical and electronic equipment. The separate collection and recycling of your waste equipment at the time of disposal will help to conserve natural resources and ensure that it is recycled in a manner that protects human health and the environment. For more information about where you can drop off your waste equipment for recycling, please contact your local city office, your household waste disposal service or the shop where your purchased the product.
6.4 Taiwan ROHS
Equipment Name: Server Model:

	Hazardous Substances
Unit	Pb	Hg	Cd	Cr+6	PBB	PBDE
Casing	○	○	○	○	○	○
Circuit Board Assembly	—	○	○	○	○	○
Other Wires	—	○	○	○	○	○
Note 1: “Exceeding 0.1 wt %” and “Exceeding 0.01 wt %” refer to the percentage content of restricted substances exceeding the percentage content threshold. Note 2: “○” indicates that the percentage content of the restricted substance does not exceed the percentage content threshold. Note 3: “—” indicates that the item is an excluded substance.

6.5 FCC Supplier’s Declaration of Conformity
Supplier’s Declaration of Conformity
Trade Name:
Model Number: S21 XP Hyd.
Responsible Part—U.S. Contact Information
Company: Bitmain Technologies Delaware Limited
Street Address: 840 New Burton Street, Suite 201
City, State: City of Dover, State of Delaware
Zip Code: DE 19904
Telephone number: +1 508 6150 359
Internet contact information: https://www.bitmain.com/
FCC Compliance Statement:
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
6.6 EU Declaration of Conformity
EU Declaration of Conformity
Manufacturer’s Name: BITMAIN DEVELOPMENT PTE. LTD.
Manufacturer’s Address: 1 Raffles Place, #36-01 One Raffles Place, Singapore 048616
For the following equipment
Trade Mark:
Product: Server
Model No.: S21 XP Hyd.
is herewith confirmed to comply with the requirements set out in Directive 2014/35/EU, Directive 2014/30/EU, and Directive 2011/65/EU. Compliance with 2014/35/EU and 2014/30/EU are evaluated by applying the following standards:
Safety standard: EN 62368-1:2014+A11
EMC standard: EN 55032:2015+A11:2020(Class A); EN 55032: 2015;
EN 55035: 2017; EN 55035: 2017+A11:2020
EN IEC 61000-3-2: 2019; EN 61000-3-3: 2013+A1:2019
This declaration of conformity is issued under the sole responsibility of the manufacture.
Signature:
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Warranty

1. A 365-day warranty is provided starting from the shipping date. BITMAIN will cover shipping costs when shipping a replacement unit within the warranty period.
2. The warranty only applies to the original purchaser who purchased the machine directly from BITMAIN. Once the miner is resold, warranty coverage becomes the responsibility of the re-seller.
3. If the user fails to use the product per the given instructions, specifications, and conditions provided or changes the function settings of the unit without BITMAIN’s prior consent, BITMAIN will not be liable for any damage arising therefrom.
4. Click https://service.bitmain.com/support/policy for a complete list of the Terms & Conditions that apply to all orders placed on https://shop.bitmain.com.

Note:
Only new machines are eligible for a 365-day warranty; used machines are not included

BITMAIN TECHNOLOGIES INC.
www.bitmain.com

Documents / Resources

BITMAIN S21 XP Hyd AntMiner Bitcoin Miner [pdf] User Guide S21 XP Hyd., S21 XP Hyd AntMiner Bitcoin Miner, S21 XP Hyd, AntMiner Bitcoin Miner, Bitcoin Miner, Miner

References

• User Manual