1. Introduction
The MINISFORUM UM890 Pro is a compact and powerful mini PC designed for a wide range of applications, from demanding professional tasks to immersive gaming. Equipped with an AMD Ryzen 9 8945HS processor and AMD Radeon 780M graphics, it offers robust performance, extensive connectivity, and upgradeability in a small form factor. This manual provides essential information for setting up, operating, maintaining, and troubleshooting your device.

Image: The MINISFORUM UM890 Pro Mini PC, a compact black desktop unit with front-facing USB ports and a power button.
2. Package Contents
Verify that all items listed below are included in your package. If any items are missing or damaged, please contact customer support.
- MINISFORUM UM890 Pro Mini PC
- Power Adapter
- HDMI Cable
- Wall Mount Bracket
- M.2 to Oculink Adapter Plate
- Instruction Manual

Image: A diagram illustrating the various components included in the MINISFORUM UM890 Pro package, such as the mini PC, power adapter, HDMI cable, wall mount, and Oculink adapter.
3. Hardware Overview
Familiarize yourself with the ports and components of your MINISFORUM UM890 Pro Mini PC.
Front Panel
- Power Button: Press to power on/off the device.
- USB4 Ports (x2): Supports Alt PD (65-100W PD input, 15W PD output) for data, video, and power delivery.
- USB3.2 Gen2 Type-A Ports (x2): For connecting USB devices.
- Audio Jack: For headphones or external speakers.
- DMIC: Digital Microphone input.
- Clear CMOS Button: For resetting BIOS settings.
Rear Panel
- HDMI 2.1 Port: For connecting to a display (up to 8K@60Hz/4K@144Hz).
- DisplayPort 1.4: For connecting to a display (up to 8K@60Hz/4K@144Hz).
- 2.5G RJ45 Ethernet Ports (x2): For wired network connections, supports link aggregation.
- Oculink Port: For connecting an external graphics card dock (occupies an M.2 slot).
- DC 19V Power Input: For connecting the power adapter.

Image: Detailed view of the front and rear panels of the MINISFORUM UM890 Pro, highlighting all available ports and their labels for easy identification.
4. Setup and Initial Operation
Follow these steps to set up your Mini PC for the first time.
- Connect Peripherals: Connect your monitor(s) to the HDMI, DisplayPort, or USB4 ports. Connect your keyboard and mouse to the available USB ports.
- Connect to Network: For a wired connection, plug an Ethernet cable into one of the 2.5G RJ45 ports. For wireless, ensure Wi-Fi is enabled during OS setup.
- Connect Power: Plug the power adapter into the DC 19V input port on the rear panel, then connect it to a power outlet.
- Power On: Press the power button on the front panel. The power indicator light will illuminate.
- Initial OS Setup: Follow the on-screen instructions to complete the operating system setup. This typically involves selecting language, region, and user account creation.
5. Memory and Storage Upgrades
The UM890 Pro supports dual-channel DDR5 RAM and two M.2 2280 PCIe 4.0 SSDs for easy expansion.
Upgrading RAM
- The device features two SODIMM slots, supporting up to 96GB of DDR5 5600MHz RAM.
- To upgrade, carefully open the bottom cover of the Mini PC.
- Locate the SODIMM slots and gently insert the new RAM modules, ensuring they are seated correctly.
Upgrading SSD
- The UM890 Pro provides two M.2 2280 PCIe 4.0 SSD slots, expandable up to 8TB.
- After opening the bottom cover, locate the M.2 slots.
- Insert the new M.2 SSD into an available slot and secure it with the provided screw.

Image: An exploded view of the MINISFORUM UM890 Pro, illustrating the internal layout with visible SODIMM slots for DDR5 RAM and M.2 2280 PCIe 4.0 SSD slots, highlighting its quick-release structure for upgrades.
6. Connectivity and Display
The UM890 Pro offers versatile connectivity options for various setups.
Network Connectivity
- Dual 2.5G RJ45 LAN: Provides high-speed wired network access and supports link aggregation for increased bandwidth and redundancy.
- Wi-Fi 6E: For fast and reliable wireless internet access.
- Bluetooth 5.3: For connecting wireless peripherals such as keyboards, mice, and headphones.
Multi-Display Support
The Mini PC supports up to four displays simultaneously, offering flexible workspace configurations.
- Connect displays via HDMI 2.1, DisplayPort 1.4, and the two USB4 ports.
- Supports resolutions up to 8K at 60Hz or 4K at 144Hz.

Image: A visual representation of the MINISFORUM UM890 Pro connected to four monitors, demonstrating its quad-screen display capabilities for an expanded workspace.

Image: A graphic highlighting the dual 2.5G RJ45 Ethernet ports and the full-speed 40G USB4 ports of the MINISFORUM UM890 Pro, emphasizing advanced data transfer and networking capabilities.
7. Cooling System
The UM890 Pro incorporates an efficient cooling system to maintain optimal performance and low noise levels.
- Cold Wave 2.2 Cooling: Features two 8mm high-performance heat pipes and a high-density offset blade fan.
- Active DDR & SSD Heatsink Fan: Dedicated cooling for memory and storage to reduce temperatures by up to 60% for DDR and 40% for SSD.
- Liquid Gold CPU Cooling: Utilizes liquid gold material for superior thermal conductivity.
- Low Noise Operation: Designed to maintain noise levels at a low 43 dB in performance mode.

Image: A diagram illustrating the Cold Wave 2.2 cooling system of the MINISFORUM UM890 Pro, showing the heat pipes, fans, and active heatsinks for DDR and SSD, along with performance metrics for temperature reduction and noise levels.
8. Oculink Port for External Graphics
The Oculink port allows for the connection of an external graphics card (eGPU) dock, significantly enhancing the Mini PC's graphics capabilities for demanding applications and gaming.
- The Oculink port utilizes a dedicated M.2 slot internally. When using an Oculink eGPU, one M.2 SSD slot will be occupied.
- This feature transforms the UM890 Pro into a high-performance gaming or workstation system.

Image: The MINISFORUM UM890 Pro connected to an external graphics card via the Oculink port, showcasing its enhanced gaming capabilities with examples of game performance.
9. Troubleshooting
If you encounter issues with your 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. Try a different outlet or power adapter if available.
- No Display: Check all display cable connections (HDMI, DisplayPort, USB4). Ensure your monitor is set to the correct input source. Try connecting to a different display.
- Peripheral Not Detected: Ensure USB devices are properly connected. Try connecting them to different USB ports. Update device drivers if necessary.
- Network Connectivity Issues: For wired connections, check the Ethernet cable and router. For Wi-Fi, ensure the Wi-Fi adapter is enabled and connected to the correct network.
- System Instability/Freezing: Ensure the cooling vents are not obstructed. Update drivers and operating system. If issues persist, consider resetting CMOS using the dedicated button.
10. Technical Specifications
| Feature | Specification |
|---|---|
| Processor | AMD Ryzen 9 8945HS (8 Cores, 16 Threads, up to 5.2 GHz) |
| Graphics | AMD Radeon 780M (Integrated) |
| RAM | 32GB DDR5 5600MHz (Dual-channel, expandable up to 96GB) |
| Storage | 1TB PCIe 4.0 SSD (Dual M.2 2280 slots, expandable up to 8TB) |
| Video Output | HDMI 2.1, DisplayPort 1.4, 2x USB4 (Quad-screen support, up to 8K@60Hz/4K@144Hz) |
| Networking | 2x 2.5G RJ45 Ethernet, Wi-Fi 6E, Bluetooth 5.3 |
| USB Ports | 2x USB4 (Alt PD), 4x USB3.2 Gen2 Type-A |
| Other Ports | 1x Oculink, 1x Audio Jack, 1x DMIC, 1x Clear CMOS button |
| Cooling System | Cold Wave 2.2 (8mm heat pipes, high-density fan, active DDR/SSD heatsink, liquid gold CPU cooling) |
| Operating System | OS (Pre-installed) |
| Dimensions | 7.2 x 6.3 x 5 inches (Package) |
| Weight | 3.56 pounds |
11. Warranty and Support
MINISFORUM products come with a standard warranty. For detailed warranty terms and conditions, please refer to the warranty card included in your package or visit the official MINISFORUM website.
For technical support, product inquiries, or service requests, please contact MINISFORUM customer support through their official website or the contact information provided in your warranty documentation.





