1. Product Overview
The MINISFORUM UM690L Slim Mini PC is a compact desktop computer designed for efficient performance in various tasks, from light gaming and image editing to browsing and programming. It features an advanced processor and powerful integrated graphics, offering a versatile computing experience.
Key features include:
- Excellent Processor: Equipped with an AMD Ryzen 9 6900HX (8C/16T up to 4.9Ghz) processor, built on a 6nm process with Zen 3+ architecture, ensuring smooth handling of heavy computing tasks and superior multitasking capabilities.
- Powerful Graphics: Integrates AMD Radeon 680M Graphics, based on the RDNA 2 architecture, delivering high frame rates and advanced content creation features.
- 8K Video Output: Supports three video outputs simultaneously: 1x USB4 (8K@60Hz), 1x HDMI (4K@60Hz), and 1x DisplayPort (4K@60Hz), providing expanded display options and enhanced work efficiency. The USB4 port also offers high-speed data transfer and graphics function enhancement.
- Expandable Capacity: Pre-installed with LPDDR5-6400 32GB RAM (non-upgradable) and a 1TB 2280 NVMe PCIe4.0 SSD (up to 2TB). An additional PCIe SSD slot is available for further storage expansion up to 2TB.
Video 1.1: Introduction to the MINISFORUM UM690L Slim Mini PC, highlighting its compact design and core features.
Video 1.2: A brief overview of the UM690L Slim's capabilities and design.
2. Package Contents
Verify that all items are present in the package:
- 1x UM690L Slim Mini PC
- 1x HDMI cable
- 1x US Power Adapter
- 1x Manual

Image 2.1: Illustration of the MINISFORUM UM690L Slim Mini PC and its included accessories: HDMI cable, power adapter, and user manual.
3. Hardware Overview
3.1. External Ports
The UM690L Slim Mini PC features a variety of ports for connectivity and expansion:

Image 3.1: Front and rear views of the MINISFORUM UM690L Slim Mini PC, showcasing its compact size and port layout.

Image 3.2: Close-up of the rear panel ports, including USB4, HDMI, DisplayPort, 2.5G LAN, and power input.
- Front Ports: Power Button, 2x USB3.2 Type-A, 1x Audio Jack.
- Rear Ports: DC 19V Power Input, 2x 2.5G LAN (RJ45), 1x HDMI, 1x USB4 (8K@60Hz), 1x DisplayPort (4K@60Hz), 2x USB2.0.
3.2. Internal Components
The Mini PC's internal architecture is designed for high performance and efficient cooling:

Image 3.3: Exploded view of the Mini PC's internal components, highlighting the AMD Ryzen processor, DDR5 RAM, and M.2 SSDs.
- Processor: AMD Ryzen 9 6900HX.
- Graphics: AMD Radeon 680M.
- RAM: 32GB LPDDR5-6400 (non-upgradable).
- Storage: 1TB 2280 NVMe PCIe4.0 SSD, with an additional PCIe SSD slot for expansion.
- Wireless: WiFi6E and Bluetooth 5.3.
4. Setup Instructions
Follow these steps to set up your MINISFORUM UM690L Slim Mini PC:
- Connect Display: Connect your monitor(s) to the Mini PC using an HDMI, DisplayPort, or USB4 cable. The device supports up to three displays simultaneously.
- Connect Peripherals: Plug in your USB keyboard and mouse into the available USB ports on the front or rear of the Mini PC.
- Connect Power: Connect the US Power Adapter to the DC 19V port on the rear of the Mini PC, then plug the adapter into a power outlet.
- Power On: Press the power button located on the front of the Mini PC. The power indicator light will illuminate.
- Network Connection: For wired internet, connect an Ethernet cable to one of the 2.5G LAN ports. For wireless, the device supports WiFi6E.
Video 4.1: Visual guide for the installation process of the UM690S, which shares similar setup steps with the UM690L Slim.
5. Operating Instructions
5.1. Basic Operation
- Power On/Off: Press the front power button to turn the device on. To turn off, use the operating system's shutdown function or press and hold the power button for 5 seconds.
- Restart: Use the operating system's restart function.
- Sleep Mode: Use the operating system's sleep function.
5.2. Multi-Monitor Setup
The UM690L Slim supports up to three independent displays simultaneously, enhancing productivity and multimedia experiences.
- Connection: Connect monitors to the USB4, HDMI, and DisplayPort outputs.
- Configuration: Once connected, configure display settings through your operating system (e.g., Windows Display Settings) to extend or duplicate your desktop.

Image 5.1: The Mini PC driving a triple-monitor setup, demonstrating its multi-display capabilities.
5.3. USB4 Port Functionality
The versatile USB4 port offers advanced capabilities:
- 8K Display Output: Connect an 8K monitor for ultra-high-resolution visuals.
- High-Speed Data Transfer: Enjoy data transfer speeds up to 40Gbps.
- Power Delivery: Supports PD 65-100W input power supply to the host and 15W external output power supply.
- External Graphics: The USB4 port can be used to connect external graphics solutions for enhanced gaming or demanding graphical tasks.
6. Maintenance
To ensure optimal performance and longevity of your Mini PC, follow these maintenance guidelines:
- Keep Vents Clear: Ensure that the ventilation grilles on the sides and bottom of the Mini PC are not obstructed to allow for proper airflow and heat dissipation.
- Regular Cleaning: Periodically clean the exterior of the Mini PC with a soft, dry cloth. Avoid using liquid cleaners directly on the device.
- Software Updates: Regularly update your operating system and drivers to ensure system stability, security, and performance.
- Environmental Conditions: Operate the Mini PC in a well-ventilated area, away from direct sunlight, excessive heat, and moisture.
7. Troubleshooting
If you encounter issues with your MINISFORUM UM690L Slim Mini PC, refer to the following common problems and solutions:
- No Power:
- Ensure the power adapter is securely connected to the Mini PC and a working power outlet.
- Verify the power outlet is functional by plugging in another device.
- Try a different power outlet if available.
- No Display:
- Check that the display cable (HDMI, DisplayPort, or USB4) 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 a different display cable or monitor if possible.
- Slow Performance:
- Close unnecessary applications running in the background.
- Check available storage space on the SSD. Delete unneeded files or consider adding an additional SSD.
- Ensure the Mini PC's vents are not obstructed, as overheating can lead to performance throttling.
- Update your operating system and drivers.
- Peripheral Not Detected:
- Ensure the peripheral is properly connected to a functional USB port.
- Try connecting the peripheral to a different USB port.
- Install or update the drivers for the peripheral.
If problems persist, please contact MINISFORUM customer support for further assistance.
8. Technical Specifications
| Feature | Specification |
|---|---|
| Processor | AMD Ryzen 9 6900HX (8C/16T, up to 4.9Ghz) |
| Graphics | AMD Radeon 680M (Graphics Frequency 2400MHz) |
| RAM | 32 GB LPDDR5-6400 (non-upgradable) |
| Storage | 1 TB PCIe4.0 2280 NVMe SSD (expandable up to 2TB) |
| Video Output | 1x USB4 (8K@60Hz), 1x HDMI (4K@60Hz), 1x DisplayPort (4K@60Hz) |
| Network | 2x 2.5G LAN (RJ45), WiFi6E, Bluetooth 5.3 |
| USB Ports | 2x USB3.2 Type-A (front), 2x USB2.0 (rear), 1x USB4 (rear) |
| Audio | 1x Audio Jack (front) |
| Operating System | OS (Pre-installed) |
| Dimensions | 7.17 x 6.38 x 4.49 inches |
| Weight | 3.32 pounds |
| Color | Black |
9. Warranty and Support
MINISFORUM products typically come with a manufacturer's warranty covering defects in materials and workmanship. For specific warranty terms and conditions, please refer to the documentation included with your product or visit the official MINISFORUM website.
For technical support, troubleshooting assistance, or warranty claims, please contact MINISFORUM customer service through their official channels. Contact information can usually be found on the MINISFORUM website or in your product's manual.