1. Introduction
This manual provides detailed instructions for the setup, operation, maintenance, and troubleshooting of your Beelink SER5 Pro Mini PC, model SER5-5825U. This compact and powerful mini PC features an AMD Ryzen 7 5825U processor, 32GB DDR4 RAM, and a 500GB PCIe 3.0 SSD, designed for efficient performance across various applications.

Figure 1: Front and rear view of the Beelink SER5 Pro Mini PC, highlighting its compact design and available ports.

Figure 2: Overview of the Beelink SER5 Pro's core specifications, including AMD Ryzen 7 5825U processor, 4.5GHz max turbo frequency, 8 cores/16 threads, 2000MHz Radeon Graphics, DDR4 3200MHz RAM, M.2 NVMe SSD, Wi-Fi 6, Bluetooth 5.2, and triple-screen display support.
2. Setup
2.1 Package Contents
Before proceeding, please verify that all items are present in the package:
- Beelink SER5 Pro Mini PC
- User Manual
- HDMI Cable
- Power Adapter
2.2 Connecting Peripherals
Follow these steps to connect your mini PC:
- Connect Display: Use the provided HDMI cable to connect your monitor to the HDMI port on the mini PC. For triple display setups, utilize the DisplayPort (DP) and Type-C (video output) ports as well.
- Connect Input Devices: Plug your USB keyboard and mouse into the available USB 3.2 Gen2 or USB 2.0 ports.
- Connect Power: Insert the power adapter cable into the DC Jack on the mini PC, then plug the power adapter into a wall outlet.

Figure 3: Detailed diagram of the front and rear interfaces, including USB 3.2 Gen2, Type-C (Data&Video), Audio Jack, Power button, RTC Key, LAN (1000Mbps), USB 2.0, DP 1.4, HDMI 2.0, and DC Jack.
2.3 First Boot
After connecting all peripherals and power, press the power button located on the front of the mini PC. The system will initiate the boot process. Follow any on-screen instructions for initial operating system setup.
3. Operating the Mini PC
3.1 Power On/Off
- Power On: Press the power button on the front panel.
- Power Off: Access the operating system's shutdown menu to perform a graceful shutdown. Alternatively, press and hold the power button for 5-7 seconds for a forced shutdown (use only when necessary to prevent data loss).
3.2 Network Connectivity
- Wired Connection: Connect an Ethernet cable to the RJ45 LAN port on the rear of the mini PC for a stable Gigabit Ethernet connection.
- Wireless Connection (Wi-Fi 6): The mini PC supports Wi-Fi 6 (802.11ax). Access your operating system's network settings, select your desired Wi-Fi network, and enter the password to connect.

Figure 4: The mini PC supports Wi-Fi 6 for faster wireless data transmission and Bluetooth 5.2 for stable peripheral connections.
3.3 Multiple Display Configuration
The Beelink SER5 Pro supports up to three 4K@60Hz displays simultaneously via its HDMI, DisplayPort (DP), and Type-C ports. To configure multiple displays:
- Connect your monitors to the available video output ports.
- Once the operating system loads, right-click on the desktop and select 'Display settings' (Windows) or similar options in other operating systems.
- Adjust display orientation, resolution, and arrangement as needed.

Figure 5: Example of a triple-screen display setup, demonstrating the mini PC's capability to enhance productivity and viewing experiences.
3.4 Bluetooth Connectivity
The mini PC includes Bluetooth 5.2 for connecting wireless peripherals such as keyboards, mice, and headphones. To pair a Bluetooth device:
- Ensure your Bluetooth device is in pairing mode.
- Navigate to your operating system's Bluetooth settings.
- Select 'Add Bluetooth or other device' and follow the on-screen prompts to complete pairing.
4. Hardware Maintenance and Upgrades
4.1 Cleaning
To maintain optimal performance and prevent overheating, regularly clean the exterior of your mini PC with a soft, dry cloth. Ensure the ventilation openings are free from dust accumulation. Do not use liquid cleaners directly on the device.

Figure 6: The SER5 Pro features a cooling fan, heat pipes, and fins for efficient heat dissipation, ensuring quiet operation.
4.2 RAM Upgrade
The Beelink SER5 Pro Mini PC comes with dual SO-DIMM DDR4 RAM slots, supporting up to 64GB (2 x 32GB) at 3200MHz. To upgrade or replace RAM:
- Power off the mini PC and disconnect all cables.
- Carefully open the mini PC casing (refer to the specific model's disassembly guide if available).
- Locate the SO-DIMM slots. Gently push the clips on both sides of the RAM module outwards to release it.
- Insert the new RAM module(s) into the slots, ensuring they are correctly aligned, and push down until the clips lock into place.
- Close the casing and reconnect all cables.

Figure 7: DDR4 SO-DIMM RAM modules, illustrating the type of memory compatible with the SER5 Pro for upgrades up to 64GB.
4.3 Storage Upgrade
The mini PC includes a 500GB M.2 NVMe 2280 SSD and supports expansion with an additional 2.5-inch SATA HDD/SSD (up to 2TB). To upgrade storage:
- Power off the mini PC and disconnect all cables.
- Open the mini PC casing.
- For M.2 NVMe SSD: Locate the M.2 slot. Remove the screw securing the existing SSD (if replacing) or insert a new M.2 NVMe 2280 SSD into the slot and secure it with the screw.
- For 2.5-inch SATA HDD/SSD: Locate the 2.5-inch drive bay. Install the drive and connect the SATA data and power cables.
- Close the casing and reconnect all cables.

Figure 8: An M.2 NVMe 2280 PCIe 3.0 x4 SSD, which is the primary storage type in the SER5 Pro and can be upgraded up to 2TB.
5. Troubleshooting
This section addresses common issues you might encounter with your Beelink SER5 Pro Mini PC.
5.1 No Power
- Ensure the power adapter is securely connected to both the mini PC and a working power outlet.
- Verify the power outlet is functional by plugging in another device.
- Check the power adapter for any visible damage.
5.2 No Display Output
- Confirm the HDMI, DP, or Type-C cable is securely connected to both the mini PC and the monitor.
- Ensure the monitor is powered on and set to the correct input source.
- Try connecting to a different display or using a different cable to rule out faulty components.
5.3 Network Connectivity Issues
- Wired: Check if the Ethernet cable is properly connected to the LAN port and your router/modem. Verify router/modem status.
- Wireless: Ensure Wi-Fi is enabled in the operating system settings. Confirm you are connected to the correct network and the password is accurate. Restart your router/modem.
5.4 CMOS Reset
If you encounter persistent boot issues or incorrect BIOS settings, you may need to reset the CMOS. The mini PC features a 'CLR CMOS' button on the front panel. To perform a CMOS reset:
- Power off the mini PC and disconnect the power adapter.
- Locate the small 'CLR CMOS' button (often recessed, requiring a paperclip or similar tool to press).
- Press and hold the 'CLR CMOS' button for 5-10 seconds.
- Reconnect the power adapter and power on the mini PC.
6. Specifications
Detailed technical specifications for the Beelink SER5 Pro Mini PC (Model SER5-5825U).

Figure 9: Comprehensive product specification table for the Beelink SER5 Pro Mini PC.
| Feature | Specification |
|---|---|
| Model | SER5-5825U |
| Processor | AMD Ryzen 7 5825U (8 Cores/16 Threads, 3.2GHz up to 4.5GHz) |
| Graphics | AMD Radeon Graphics 8 Core 2000MHz |
| RAM | 32GB DDR4 (3200MHz SO-DIMM, expandable to 64GB) |
| Storage | 500GB M.2 NVMe 2280 PCIe 3.0 SSD (expandable to 2TB); Supports 2.5-inch SATA HDD/SSD (not included) |
| Wireless Connectivity | Wi-Fi 6 (802.11ax), Bluetooth 5.2 |
| Ports (Front) | 3x USB 3.2 Gen2, 1x Type-C (Data & Video), 1x Audio Jack (HP&MIC), 1x Power Button, 1x CLR CMOS |
| Ports (Rear) | 1x LAN (RJ45 1000M), 1x USB 2.0, 1x DP 1.4 (4K 144Hz), 1x HDMI 2.0 (4K 60Hz), 1x DC Jack |
| Video Output | Triple Display (HDMI, DP, Type-C) 4K@60Hz |
| Operating System | Pre-installed OS (specific version may vary) |
| Dimensions | Approx. 4.96 x 4.44 x 1.65 inches (126 x 113 x 42mm) |
| Weight | Approx. 1.96 pounds |
7. Warranty and Support
For warranty information, technical support, or service inquiries regarding your Beelink SER5 Pro Mini PC, please refer to the official Beelink website or contact your point of purchase. Keep your proof of purchase for warranty claims.
Additional resources and driver updates may be available on the official Beelink support page.