How to Fix Dual 2.5G Ethernet (LAN) Disconnects and Speed Issues on the Minisforum UM890 Pro
Causes The UM890 Pro is equipped with dual Intel I225-V (or I226-V) 2.5GbE controllers — these Intel 2.5G chipsets have a well-documented hardware bug...
Overview
The Minisforum UM890 Pro is an enthusiast mini PC built for multitasking, virtualization, and eGPU gaming. Driven by the AMD Ryzen 9 8945HS, it offers dual 2.5G LAN ports and a dedicated OCuLink connector to enable near-native speed discrete desktop graphics setups.
Key Highlights
- AMD Ryzen 9 8945HS high-performance CPU
- Dedicated OCuLink port for external GPUs
- Dual 2.5Gbps high-speed Ethernet ports
- Supports up to 96GB RAM capacity
Technical Specifications
| Brand | Minisforum |
|---|---|
| Model | Minisforum UM890 Pro |
| Processor (CPU) | AMD Ryzen 9 8945HS (8 Cores, 16 Threads, up to 5.2 GHz) |
| Graphics (GPU) | AMD Radeon 780M (12 CUs) |
| Memory (RAM) | 32GB DDR5 Dual Channel (supports up to 96GB DDR5-5600) |
| Storage | 1TB M.2 2280 PCIe 4.0 SSD (supports up to 8TB via dual slots) |
| Ports & I/O | 1x OCuLink port 2x USB4 (40Gbps) 4x USB-A 3.2 Gen2 1x HDMI 2.1 1x DisplayPort 1.4 2x 2.5G RJ45 LAN 1x Audio Jack |
| Connectivity | Wi-Fi 6E, Bluetooth 5.2 |
| Network | Wi-Fi 6E, Bluetooth 5.2, Dual 2.5G LAN |
| Operating System | Windows 11 Pro |
| Dimensions | 130 x 126 x 53 mm |
Troubleshooting
Fix Guides for the Minisforum UM890 Pro
Step-by-step fixes for common issues with this gadget
How to Fix Fan Noise and Thermal Throttling on the Minisforum UM890 Pro
Causes The UM890 Pro's cooling system uses a single 120 mm blower fan with an aggressive default fan curve in the BIOS — the fan ramps up to 100% spee...
How to Fix OCuLink eGPU Not Detected on the Minisforum UM890 Pro
Causes The OCuLink port on the UM890 Pro uses a PCIe Gen4 x4 interface that requires the BIOS to have "Above 4G Decoding" and "Resizable BAR" enabled ...
How to Fix RAM Not Running at Rated Speed or Detected in Single Channel on the Minisforum UM890 Pro
Causes The UM890 Pro supports DDR5 SO-DIMM modules up to 96 GB total (48 GB per slot) at speeds up to 5600 MT/s (JEDEC), but actual achievable speed d...
How to Fix USB4 DisplayPort Alt Mode Not Working on the Minisforum UM890 Pro
Causes The UM890 Pro's USB4 ports use a multi-function USB4 controller that shares DisplayPort lanes with the integrated Radeon 780M iGPU's display ou...
How to Fix Wi-Fi 6E and Bluetooth Connectivity Issues on the Minisforum UM890 Pro
Causes The UM890 Pro ships with a MediaTek MT7922 (RZ616) Wi-Fi 6E + Bluetooth 5.2 module — the MediaTek Linux driver (mt7921e/mt7922) has known stabi...