Introduction
This manual provides detailed instructions for the setup, operation, maintenance, and troubleshooting of your Beelink SER9 Pro Mini PC. Please read this manual thoroughly before using the device to ensure optimal performance and longevity.

Image: Front and rear view of the Beelink SER9 Pro Mini PC, showcasing its compact design and various ports.
Package Contents
Verify that all items are present in the package:
- 1x Beelink H 255 mini pc
- 1x HDMI Cable (1M)
- 1x User manual
- 1x Power Adapter (19V/5.26A)
Setup Guide
1. Connecting Peripherals
Before powering on, connect your monitor, keyboard, and mouse to the Mini PC.
- Display: Connect your monitor(s) using the HDMI 2.1, DisplayPort 1.4, or USB4 ports. The device supports up to three displays simultaneously at 4K 240Hz.
- Keyboard & Mouse: Connect USB keyboard and mouse to the available USB 2.0 or USB 3.2 ports.
- Audio: If using external speakers or headphones, connect them to the 3.5mm audio jack.
- Network: For a wired connection, connect an Ethernet cable to the 2.5Gbps LAN port. For wireless, ensure your Wi-Fi network is available.

Image: Detailed view of the Beelink SER9 Pro Mini PC's front and rear ports, including USB, LAN, HDMI, DP, USB4, and audio jacks.
2. Power Connection
Connect the provided power adapter to the DC IN port on the Mini PC and then plug it into a power outlet.
3. Initial Boot and Operating System Setup
Press the power button located on the front of the device. The Mini PC comes pre-installed with Windows 11 Pro. Follow the on-screen instructions to complete the initial operating system setup, including language, region, and user account creation.

Image: Illustration of multiple wireless transmission options including Wi-Fi 6, 2.5Gbps LAN, and Bluetooth 5.2, highlighting the device's connectivity capabilities.
Operating Instructions
Power On/Off
- To Power On: Press the power button once.
- To Shut Down: Use the Windows Start menu to select "Shut down" or press and hold the power button for 5 seconds.
Display Configuration
The Beelink SER9 Pro supports up to three displays. To configure multiple displays in Windows 11 Pro:
- Right-click on the desktop and select "Display settings".
- Under "Multiple displays", you can detect, identify, and arrange your monitors.
- Adjust resolution and refresh rate (up to 4K 240Hz) for each display as needed.

Image: Visual representation of the Beelink SER9 Pro Mini PC connected to three monitors, demonstrating its triple-display output capability at 4K 240Hz.
Audio Features
The Mini PC includes built-in dual speakers and an AI voice-enabled microphone array.
- Built-in Speakers: Provide high-volume audio with rich details.
- Microphone Array: Enables 360° voice recognition within 5 meters and enhances audio clarity through AI voice processing.

Image: Internal view highlighting the built-in dual speakers of the Beelink SER9 Pro Mini PC, designed for immersive audio without external equipment.

Image: Depiction of the AI Voice Interaction feature, showing the microphone array's capability for 360° voice pickup and intelligent processing.
Performance Overview
The Beelink SER9 Pro is equipped with advanced components for high performance:
- Processor: AMD Ryzen 7 H 255 (8 Cores/16 Threads, up to 4.9GHz) with Zen 4 architecture.
- Graphics: Integrated AMD Radeon 780M (12 CUs, 2600MHz) with RDNA 3 graphics architecture.
- Memory: 32GB LPDDR5X 7500MT/s high-frequency RAM.
- Storage: 1TB PCIe 4.0 SSD, with dual M.2 PCIe 4.0 x4 SSD slots supporting up to 8TB total storage.
- Cooling: MSC2.0 cooling system designed for efficient heat dissipation and low noise operation (as low as 32 dB).

Image: An overview graphic detailing the key features of the Beelink SER9 Pro Mini PC, including its AMD Ryzen 7 H 255 processor, Radeon 780M graphics, 32GB LPDDR5X memory, 1TB SSD, Wi-Fi 6, Bluetooth 5.2, and MSC2.0 cooling system.

Image: Close-up of the AMD Ryzen 7 H 255 processor, highlighting its 8 cores, 16 threads, 4.9GHz max turbo frequency, and 65W TDP.

Image: Visual of the AMD Radeon 780M graphics, emphasizing its 12 CUs, 2600MHz GPU frequency, and RDNA 3 architecture.

Image: Illustration of the 32GB LPDDR5X 7500MT/s high-frequency memory modules, indicating smooth software operation.

Image: Graphic demonstrating the dual PCIe 4.0 SSD slots, supporting up to 8TB of combined storage for ultra-fast data transfer.

Image: Diagram illustrating the low noise operation of the MSC2.0 cooling system, maintaining quiet performance even under load.
Maintenance
To ensure the longevity and optimal performance of your Beelink SER9 Pro Mini PC, follow these maintenance guidelines:
- Cleaning: Regularly clean the exterior of the Mini PC with a soft, dry cloth. Avoid using liquid cleaners directly on the device.
- Ventilation: Ensure that the ventilation openings are not obstructed to allow for proper airflow and heat dissipation. Do not place the Mini PC in enclosed spaces.
- Software Updates: Keep your operating system and drivers updated to the latest versions for security and performance improvements.
- Environmental Conditions: Operate the Mini PC in a cool, dry environment, away from direct sunlight and excessive dust.
Troubleshooting
If you encounter issues with your Beelink SER9 Pro Mini PC, refer to the following common troubleshooting steps:
- 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.
- No Display:
- Check that the HDMI, DisplayPort, or USB4 cable is firmly connected to both the Mini PC and the monitor.
- Ensure the monitor is powered on and set to the correct input source.
- Try a different display cable or monitor if available.
- No Internet Connection:
- Wired: Check the Ethernet cable connection and ensure your router/modem is working.
- Wireless: Verify Wi-Fi is enabled in Windows settings and you are connected to the correct network with the correct password.
- Restart your router/modem and the Mini PC.
- System Slowdown:
- Close unnecessary applications running in the background.
- Check for and install any pending Windows updates.
- Ensure adequate ventilation to prevent overheating.
If these steps do not resolve the issue, please contact customer support.
Specifications
| Feature | Detail |
|---|---|
| Processor | AMD Ryzen 7 H 255 (8C/16T, 3.8GHz Base, 4.9GHz Max) |
| Graphics | AMD Radeon 780M (Integrated, 12 CUs, 2600MHz) |
| RAM | 32GB LPDDR5X 7500MT/s |
| Storage | 1TB PCIe 4.0 SSD (Dual M.2 PCIe 4.0 x4 slots, up to 8TB) |
| Operating System | Windows 11 Pro |
| Display Output | HDMI 2.1, DisplayPort 1.4, USB4 (Triple Display, 4K 240Hz) |
| Network | 2.5Gbps Ethernet, Wi-Fi 6, Bluetooth 5.2 |
| USB Ports | 2x USB 3.2 (10Gbps), 2x USB 2.0 (480Mbps), 1x USB4 (40Gbps), 1x Type-C (10Gbps Data) |
| Audio | Built-in MIC Array, Built-in Dual Speakers, 2x 3.5mm Audio Jack |
| Dimensions | 8.23 x 7.72 x 4.21 inches (Package) |
| Weight | 3.1 pounds |
Warranty and Support
Beelink provides comprehensive support for your SER9 Pro Mini PC:
- Warranty: 12-month warranty.
- Technical Support: Lifetime technical support.
- Customer Service: 7-day, 24-hour customer service.
- Contact: For product questions or support, log into your Amazon account, go to "Your Orders", and select "Ask Product Question" for the Beelink SER9 Pro.

Image: Graphic detailing Beelink's customer support, including 7D+24H customer service, 12-month warranty, and lifetime technical support.





