Dahua Ethernet Switch (4&8-port Unmanaged Desktop Switch)

Foreword

General

This manual introduces the installation, functions and operations of the 4&8-port unmanaged desktop switch (hereinafter referred to as "the Switch"). Read carefully before using the Switch, and keep the manual safe for future reference.

Safety Instructions

The following signal words might appear in the manual.

Revision History

Privacy Protection Notice

As the device user or data controller, you might collect the personal data of others such as their face, fingerprints, and license plate number. You need to be in compliance with your local privacy protection laws and regulations to protect the legitimate rights and interests of other people by implementing measures which include but are not limited: Providing clear and visible identification to inform people of the existence of the surveillance area and provide required contact information.

About the Manual

• The manual is for reference only. Slight differences might be found between the manual and the product.
• We are not liable for losses incurred due to operating the product in ways that are not in compliance with the manual.
• The manual will be updated according to the latest laws and regulations of related jurisdictions. For detailed information, see the paper user's manual, use our CD-ROM, scan the QR code or visit our official website. The manual is for reference only. Slight differences might be found between the electronic version and the paper version.
• All designs and software are subject to change without prior written notice. Product updates might result in some differences appearing between the actual product and the manual. Please contact customer service for the latest program and supplementary documentation.
• There might be errors in the print or deviations in the description of the functions, operations and technical data. If there is any doubt or dispute, we reserve the right of final explanation.
• Upgrade the reader software or try other mainstream reader software if the manual (in PDF format) cannot be opened.
• All trademarks, registered trademarks and company names in the manual are properties of their respective owners.
• Please visit our website, contact the supplier or customer service if any problems occur while using the device.
• If there is any uncertainty or controversy, we reserve the right of final explanation.

Important Safeguards and Warnings

This section introduces content covering the proper handling of the device, hazard prevention, and prevention of property damage. Read carefully before using the device, and comply with the guidelines when using it.

Transportation Requirements

[WARNING] Transport the device under allowed humidity and temperature conditions.

Storage Requirements

[WARNING] Store the device under allowed humidity and temperature conditions.

Installation Requirements

• [WARNING] Do not connect the power adapter to the device while the adapter is powered on.
• Strictly comply with the local electrical safety code and standards. Make sure that the ambient voltage is stable and meets the power supply requirements of the device.
• Personnel working at heights must take all necessary measures to ensure personal safety including wearing a helmet and safety belts.
• [WARNING] Do not place the device in a place exposed to sunlight or near heat sources.
• Keep the device away from dampness, dust, and soot.
• Put the device in a well-ventilated place, and do not block its ventilation.
• Use an adapter or cabinet power supply provided by the manufacturer.
• The power supply must conform to the requirements of ES1 in IEC 62368-1 standard and be no higher than PS2. Please note that the power supply requirements are subject to the device label.
• Do not connect the device to two or more kinds of power supplies, to avoid damage to the device.
• The device is a class I electrical appliance. Make sure that the power supply of the device is connected to a power socket with protective earthing.
• The device must be grounded by a copper wire with a cross-sectional area of 2.5 mm² and a ground resistance no more than 4 Ω.
• Voltage stabilizer and lightning surge protector are optional depending on the actual power supply on site and the ambient environment.
• To ensure heat dissipation, the gap between the device and the surrounding area should not be less than 10 cm on the sides and 10 cm on top of the device.
• When installing the device, make sure that the power plug and appliance coupler can be easily reached to cut off power.

Operation Requirements

• [WARNING] Do not disassemble the device without professional instruction.
• Operate the device within the rated range of power input and output.
• Make sure that the power supply is correct before use.
• Make sure the device is powered off before disassembling wires to avoid personal injury.
• Do not unplug the power cord on the side of the device while the adapter is powered on.
• [WARNING] Use the device under allowed humidity and temperature conditions.
• Do not drop or splash liquid onto the device, and make sure that there is no object filled with liquid on the device to prevent liquid from flowing into it.
• Operating temperature: -10 °C (+14 °F) to +55 °C (+131 °F).
• This is a class A product. In a domestic environment this may cause radio interference in which case you may be required to take adequate measures.
• Do not block the ventilator of the device with objects, such as a newspaper, table cloth or curtain.
• Do not place an open flame on the device, such as a lit candle.

Maintenance Requirements

• [WARNING] Power off the device before maintenance.
• Mark key components on the maintenance circuit diagram with warning signs.

1 Overview

1.1 Introduction

The Switch is a layer-2 commercial switch. It has a high-performance switching engine and a large buffer memory to ensure smooth video stream transmission. With a full-metal and fanless design, the Switch features great heat dissipation capability on the shell surface, and is able to work in environments that range from –10 °C (+14 °F) to +55 °C (+131 °F). With its DIP design, it can provide a variety of working modes for different scenarios. The Switch also supports power consumption management, which can adapt to the fluctuation of power consumption of terminal device to ensure stable operation. The Switch is an unmanaged switch, so it does not need to be configured through web page, which simplifies installation.

The Switch is applicable for use in in a variety of scenarios, such as in the home and office, on server farms, and in small malls.

1.2 Features

• 4/8 × 100/1000 Mbps Ethernet port.
• Uplink Combo ports include electrical port and optical port.
• All ports support IEEE802.3af and IEEE802.3at. The red port also supports Hi-PoE and IEEE802.3bt.
• 250 m long-distance PoE transmission, which can be enabled by DIP switch.
• PoE watchdog.
• Power consumption management.
• Fanless.
• Supports desktop mount and wall mount.

2 Port and Indicator

2.1 Front Panel

The following figure is for reference only, and might differ from the actual product.

Figure 2-1 Front panel (without optical ports): A diagram showing the front panel of the switch with numbered ports and indicators. Ports 1-8 are labeled as Link/Act and PoE. Uplink 1 and Uplink 2 are also shown.

Figure 2-1 Front panel (with optical ports): A diagram showing the front panel of the 8-port unmanaged desktop switch with optical ports, similar to the previous diagram but including optical uplink ports.

2.2 Rear Panel

The following figure is for reference only, and might differ from the actual product.

Figure 2-2 Rear panel: A diagram showing the rear panel with numbered items: 1 (Ground terminal), 2 (Lock hole), 3 (Power port).

3 Installation

3.1 Preparation

• Select an appropriate installation method.
• Install the Switch on a solid and flat surface.
• Leave around 10 cm of open space around the Switch for heat dissipation and to ensure good ventilation.

3.2 Desktop Mount

The Switch supports desktop mount. You can directly place it on a solid and flat desktop.

3.3 Wall Mount

Step 1: Drill two M4 screws into the wall. The distance between the screws needs to match that of the wall-mount holes of the Switch.

• Screws do not come with the package. Purchase them as needed.
• Make sure that the distance between the screws is the same as the distance between the wall-mount holes (the distance of the 4-port unmanaged desktop switch is 77.8 mm (3.06 inch), the distance of the 8-port unmanaged desktop switch without optical ports is 128.4 mm (5.06 inch), and the distance of the 8-port unmanaged desktop switch with optical ports is 120 mm (4.72 inch)).
• Leave a space of at least 4 mm between the wall and the head of the screws.

Step 2: Align the wall-mount holes on the back cover of the Switch with the screws, and hang the Switch on the screws.

Figure 3-1 Wall mount: An illustration showing how to mount the switch on a wall using screws. It depicts drilling holes, inserting screws, and hanging the switch.

4 Wiring

4.1 Connecting GND

GND cables do not come with the package of select models. Purchase them as needed. Grounding the Switch can protect it against lightning and interference. The steps for connecting the GND are as follows:

• Step 1: Remove the ground screw from the Switch and pass the ground screw through the round hole of the OT terminal of the ground cable. Turn the ground screw clockwise with a cross screwdriver to fasten the OT terminal of the ground cable.
• Step 2: Wind the other end of the ground cable into a circle with the needle-nose pliers.
• Step 3: Connect the other end of the ground cable to the ground bar, then turn the hex nut clockwise with a wrench to fasten the other end of the ground cable to the ground terminal.

Figure 4-1 Connect GND: A three-step illustration showing the process of connecting the ground cable. Step 1 shows attaching the OT terminal to the switch. Step 2 shows forming a loop with the cable. Step 3 shows connecting the cable to the ground terminal.

4.2 Connecting Power Cord

Before connecting the power cord, make sure that the Switch is securely grounded.

• Step 1: Connect one end of the power cord to the power jack of the Switch.
• Step 2: Connect the other end of the power cord to the external power socket.

4.3 Connecting SFP Ethernet Port

• Step 1: We recommend wearing antistatic gloves, and then the anti-static wrist strap before installing SFP module. Make sure that the anti-static wrist strap and the antistatic gloves are in good contact.
• Step 2: Lift the handle of the SFP module upward vertically, and stick it to the top hook. Hold the SFP module by both sides, and push it gently into the SFP slot till the SFP module is firmly connected to the slot (You can feel that both the top and bottom spring strip of the SFP module are firmly stuck with the SFP slot).

WARNING The signal is transmitted through laser by optical fiber cable. The laser conforms to the requirements of Class 1 laser products. When the Switch is powered on, do not look directly at the optical port to avoid injury on eyes.

• Do not touch the gold finger part of the SFP module when installing the SFP optical module.
• We do not recommend extracting the dustproof plug of the SFP module before connecting to the optical fiber cable.
• We do not recommend directly inserting the SFP module into the slot. Unplug the optical fiber before installation.

Figure 4-2 SFP module structure: A diagram showing the structure of an SFP module, with labels for Gold finger, Optical fiber port, Spring strip, and Handle.

Figure 4-3 Install SFP module: An illustration showing the process of installing an SFP module into the switch slot, including wearing anti-static gloves and wrist strap.

4.4 Connecting Ethernet Port

The Ethernet port is a standard RJ-45 port. With its self-adaptation function, it can be automatically configured to full duplex/half-duplex operation mode. It supports MDI/MDI-X self-recognition of the cable, allowing you to use a cross-over cable or straight-through cable to connect the terminal device to the network device.

Figure 4-4 Ethernet port pin number: A diagram showing the pinout of an RJ-45 connector, numbered 1 through 8.

Figure 4-5 Pin description: Diagrams illustrating straight-through and cross-over cable connections for RJ-45 connectors, showing the pin mappings.

The cable connection of RJ-45 connector conforms to the 568B standard (1-orange white, 2-orange, 3-green white, 4-blue, 5-blue white, 6-green, 7-brown white, 8-brown).

4.5 Connecting PoE Port

You can directly connect the Switch PoE Ethernet port to the device PoE Ethernet port through network cable to achieve synchronized network connection and power supply. With Extend Mode disabled, the maximum distance between the switch and the device is about 100 m.

When connecting to a non-PoE device, the device needs to be used with an isolated power supply.

Appendix 1 Cybersecurity Recommendations

Mandatory actions to be taken for basic device network security:

1. Use Strong Passwords

Please refer to the following suggestions to set passwords:

• The length should not be less than 8 characters.
• Include at least two types of characters; character types include upper and lower case letters, numbers and symbols.
• Do not contain the account name or the account name in reverse order.
• Do not use continuous characters, such as 123, abc, etc.
• Do not use overlapped characters, such as 111, aaa, etc.

2. Update Firmware and Client Software in Time

• According to the standard procedure in Tech-industry, we recommend to keep your device (such as NVR, DVR, IP camera, etc.) firmware up-to-date to ensure the system is equipped with the latest security patches and fixes. When the device is connected to the public network, it is recommended to enable the "auto-check for updates" function to obtain timely information of firmware updates released by the manufacturer.
• We suggest that you download and use the latest version of client software.

"Nice to have" recommendations to improve your device network security:

1. Physical Protection

We suggest that you perform physical protection to device, especially storage devices. For example, place the device in a special computer room and cabinet, and implement well-done access control permission and key management to prevent unauthorized personnel from carrying out physical contacts such as damaging hardware, unauthorized connection of removable device (such as USB flash disk, serial port), etc.

2. Change Passwords Regularly

We suggest that you change passwords regularly to reduce the risk of being guessed or cracked.

3. Set and Update Passwords Reset Information Timely

The device supports password reset function. Please set up related information for password reset in time, including the end user's mailbox and password protection questions. If the information changes, please modify it in time. When setting password protection questions, it is suggested not to use those that can be easily guessed.

4. Enable Account Lock

The account lock feature is enabled by default, and we recommend you to keep it on to guarantee the account security. If an attacker attempts to log in with the wrong password several times, the corresponding account and the source IP address will be locked.

5. Change Default HTTP and Other Service Ports

We suggest you to change default HTTP and other service ports into any set of numbers between 1024–65535, reducing the risk of outsiders being able to guess which ports you are using.

6. Enable HTTPS

We suggest you to enable HTTPS, so that you visit Web service through a secure communication channel.

7. MAC Address Binding

We recommend you to bind the IP and MAC address of the gateway to the device, thus reducing the risk of ARP spoofing.

8. Assign Accounts and Privileges Reasonably

According to business and management requirements, reasonably add users and assign a minimum set of permissions to them.

9. Disable Unnecessary Services and Choose Secure Modes

If not needed, it is recommended to turn off some services such as SNMP, SMTP, UPnP, etc., to reduce risks.

If necessary, it is highly recommended that you use safe modes, including but not limited to the following services:

• SNMP: Choose SNMP v3, and set up strong encryption passwords and authentication passwords.
• SMTP: Choose TLS to access mailbox server.
• FTP: Choose SFTP, and set up strong passwords.
• AP hotspot: Choose WPA2-PSK encryption mode, and set up strong passwords.

10. Audio and Video Encrypted Transmission

If your audio and video data contents are very important or sensitive, we recommend that you use encrypted transmission function, to reduce the risk of audio and video data being stolen during transmission.

Reminder: encrypted transmission will cause some loss in transmission efficiency.

11. Secure Auditing

• Check online users: we suggest that you check online users regularly to see if the device is logged in without authorization.
• Check device log: By viewing the logs, you can know the IP addresses that were used to log in to your devices and their key operations.

12. Network Log

Due to the limited storage capacity of the device, the stored log is limited. If you need to save the log for a long time, it is recommended that you enable the network log function to ensure that the critical logs are synchronized to the network log server for tracing.

13. Construct a Safe Network Environment

In order to better ensure the safety of device and reduce potential cyber risks, we recommend:

• Disable the port mapping function of the router to avoid direct access to the intranet devices from external network.
• The network should be partitioned and isolated according to the actual network needs. If there are no communication requirements between two sub networks, it is suggested to use VLAN, network GAP and other technologies to partition the network, so as to achieve the network isolation effect.
• Establish the 802.1x access authentication system to reduce the risk of unauthorized access to private networks.
• Enable IP/MAC address filtering function to limit the range of hosts allowed to access the device.