1. Introduction
This manual provides essential information for setting up, operating, and maintaining your MINISFORUM Venus UM790 Pro Mini PC. Please read these instructions carefully before using the device to ensure optimal performance and longevity.
Figure 1: MINISFORUM Venus UM790 Pro Mini PC overview.
The MINISFORUM Venus UM790 Pro is a high-performance mini PC designed for demanding tasks, featuring an AMD Ryzen 9 7940HS processor, AMD Radeon 780M graphics, and advanced connectivity options. Its compact design makes it suitable for various environments, from professional workstations to home entertainment setups.
2. Setup
2.1 Package Contents
Verify that all items are present in the package:
- MINISFORUM Venus UM790 Pro Mini PC
- Power Adapter
- Cooling System (pre-installed)
- HDMI Cable
- User Manual (this document)
- VESA Mount (optional, may vary by package)
2.2 Connecting Peripherals
Connect your monitor, keyboard, mouse, and other peripherals to the appropriate ports on the mini PC.
Figure 2: Front and rear view of the MINISFORUM UM790 Pro showing available ports.
The UM790 Pro features a rich interface for various needs, including:
- Front Ports: Power button, 2x USB4 (full-function, 40G, PD-IN/OUT), Audio Jack, MIC.
- Rear Ports: 2x HDMI 2.1, 1x RJ45 2.5G Ethernet Port, 4x USB3.2 Gen2 Type-A, Clear CMOS.
Figure 3: Detailed view of the rich interface ports on the UM790 Pro.
2.3 Power Connection
Connect the power adapter to the DC-IN port on the mini PC and then plug it into a power outlet. The power LED will illuminate.
2.4 Initial Boot-up
Press the power button on the front of the device. The system will boot up, and you will be guided through the initial operating system setup (typically Windows 11).
3. Operating Instructions
3.1 Display Configuration
The UM790 Pro supports up to four displays simultaneously, utilizing its 2x HDMI 2.1 ports (up to 4K@144Hz) and 2x USB4 ports (up to 8K@60Hz). Connect your monitors to these ports as needed.
Figure 4: Example of a quad-display setup with the UM790 Pro.
For optimal performance with multiple displays, ensure your display drivers are up to date.
Figure 5: Illustration of quad screen output support for enhanced productivity.
3.2 Network Connectivity
The mini PC offers both wired and wireless network options:
- Wired: Connect an Ethernet cable to the RJ45 2.5G Ethernet Port for high-speed wired internet access.
- Wireless: The integrated Intel Killer AX1675x Wi-Fi 6E module provides fast and stable wireless connectivity. Ensure your Wi-Fi drivers are installed and configured.
- Bluetooth: Bluetooth 5.2 is available for connecting wireless peripherals such as keyboards, mice, and headphones.
Figure 6: Rear view highlighting the RJ45 Ethernet port and Wi-Fi antenna connections.
3.3 USB4 Port Functionality
The two full-function 40G USB4 ports support Power Delivery (PD-IN and PD-OUT). This allows for single-cable connectivity to compatible monitors or docking stations, providing video, data, and power simultaneously. A minimum 65W PD power supply is required for PD-IN, with a maximum PD output power of 15W.
Figure 7: Demonstrating the Super One-Line Connection capability via USB4.
4. Maintenance and Upgrades
4.1 Cooling System (Cold Wave 2.0)
The UM790 Pro features an innovative liquid metal cooling system, Cold Wave 2.0, with an active memory and SSD cooler (quiet fan + large heatsink). To maintain optimal cooling performance, ensure the ventilation grilles are free from dust and obstructions. Periodically clean the exterior with a soft, dry cloth.
Figure 8: Internal view of the Cold Wave 2.0 cooling system components.
Figure 9: Diagram illustrating the airflow and components of the Cold Wave 2.0 cooling system.
4.2 Memory and Storage Upgrades
The UM790 Pro supports upgrades for both RAM and SSD storage. It features:
- Memory: Two DDR5 5600 SODIMM dual-channel memory slots, supporting up to 32GB*2 (64GB total).
- Storage: Two M.2 2280 PCIe4.0 SSD slots, supporting RAID0 and RAID1 configurations.
To access internal components for upgrades, carefully remove the bottom cover of the mini PC. Refer to the detailed internal layout diagram for component locations.
Figure 10: Exploded view showing internal components including RAM and SSD slots.
Figure 11: Illustration of DDR5 dual-channel memory support.
Figure 12: Performance comparison highlighting DDR5 5600MHz speed.
Figure 13: Demonstrating fast transfer speeds with dual PCIe4.0 SSDs and 40G USB4.
5. Troubleshooting
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 that the monitor is properly connected to the mini PC via HDMI or USB4.
- Ensure the monitor is powered on and set to the correct input source.
- Try a different cable or monitor to rule out component failure.
5.3 Network Connectivity Issues
- For wired connections, check the Ethernet cable and ensure your router/modem is working.
- For wireless connections, verify Wi-Fi is enabled and you are connected to the correct network. Restart your router/modem if necessary.
- Update network drivers if issues persist.
5.4 Accessing BIOS
To access the BIOS settings, power on the mini PC and repeatedly press the DEL or F7 key during startup. The UM790 Pro features a graphical BIOS interface for intuitive configuration.
Figure 14: Screenshot of the graphical BIOS interface.
Figure 15: Comparison of the intuitive graphical BIOS with a traditional text-based BIOS.
6. Specifications
| Feature | Detail |
|---|---|
| Processor | AMD Ryzen 9 7940HS (8 Cores/16 Threads, up to 5.2 GHz) |
| Graphics | AMD Radeon 780M (Integrated, 2.8GHz) |
| RAM | 64 GB DDR5 5600 SODIMM (Dual-channel, Max 64GB) |
| Storage | 1 TB PCIe4.0 SSD (2x M.2 2280 slots, supports RAID0/RAID1) |
| Operating System | OS (Windows 11 Home pre-installed on some models) |
| Video Output | 2x HDMI 2.1 (4K@144Hz), 2x USB4 (8K@60Hz) - Quad Display Support |
| USB Ports | 2x USB4 (Full-function, 40G, PD-IN/OUT), 4x USB3.2 Gen2 Type-A |
| Network | Intel Killer AX1675x Wi-Fi 6E, Bluetooth 5.2, 1x RJ45 2.5G Ethernet |
| Cooling System | Cold Wave 2.0 (Liquid Metal, Active Memory/SSD Cooler) |
| Dimensions | Approx. 7.2 x 6.46 x 4.57 inches (Package Dimensions) |
| Weight | Approx. 3.23 pounds (Item Weight) |
Figure 16: Overview of key features and specifications of the UM790 Pro.
7. Official Product Videos
7.1 MINISFORUM Venus UM790 Pro Overview
This video provides a comprehensive overview of the MINISFORUM Venus UM790 Pro Mini PC, highlighting its design, connectivity, and performance capabilities. It showcases the AMD Ryzen 9 7940HS processor, DDR5 memory, PCIe 4.0 SSDs, Cold Wave 2.0 cooling, and versatile port options including USB4 and HDMI 2.1.
8. Warranty and Support
MINISFORUM products come with a standard manufacturer's warranty. For detailed warranty information, technical support, or service inquiries, please refer to the official MINISFORUM website or contact their customer support directly. Keep your proof of purchase for warranty claims.
Contact Information: Please visit the official MINISFORUM website for the most up-to-date support resources and contact details.
