1. Introduction
The OREI UKM-404 is a versatile USB 3.0 4x4 Matrix Peripheral Sharing Switch designed to allow up to four different computer hosts to share four USB 3.0 devices. This device provides a seamless solution for managing peripherals like keyboards, mice, printers, scanners, and other USB devices across multiple systems, enhancing efficiency in various environments.
Image 1.1: The OREI UKM-404 USB 3.2 Gen 1 4x4 Matrix Peripheral Sharing Switch shown with its included remote control.
2. Key Features
- 4x4 USB Matrix: Share up to 4 USB devices between 4 computer hosts.
- High-Speed Data Transfer: Supports USB 3.2 Gen 1 with data transfer rates up to 5Gbps.
- Backward Compatibility: Fully compatible with USB 2.0 and USB 1.1 devices.
- Powered USB-A Ports: Provides 5V/1.5A power output on all USB-A device ports for stable peripheral performance.
- Plug-and-Play: No driver installation required for operation.
- Wide Operating System Support: Compatible with Windows, Linux, and macOS.
- Multiple Control Options: Switch control via front panel buttons, included IR remote, RS-232, or WebGUI.
Image 2.1: A summary of the key features of the OREI UKM-404, including USB 3.2 Gen 1 compliance, 5Gbps data transfer, 5V/1.5A USB-A output, plug-and-play functionality, and multi-OS compatibility.
3. Package Contents
Please verify that all items are present in your package:
- 1x OREI UKM-404 USB 3.0 4x4 Matrix Peripheral Sharing Switch Unit
- 1x IR Remote Control
- 1x IR Receiver Cable
- 4x USB 3.0 Type A to Type B Cables
- 1x 3-pin 3.81mm Phoenix Connector
- 1x Power Adapter (US plug, with adapter/converter for international use)
- 1x User Manual (this document)
Image 3.1: Visual representation of the items included in the OREI UKM-404 package: the main unit, remote control, IR receiver cable, four USB cables, Phoenix connector, power adapter, and user manual.
Image 3.2: The OREI UKM-404 unit shown with its remote control and an example power adapter (UK plug variant).
4. Product Overview
4.1 Front Panel
- Power Button: Toggles the device power on/off.
- IR Receiver: Receives signals from the IR remote control.
- Device 1-4 Host Indicators/Buttons: Each set of buttons (H1-H4) corresponds to a shared USB device (DEVICE 1-4). Pressing a button assigns that device to the selected host. LEDs indicate the active host for each device.
4.2 Rear Panel
- TCP/IP Port: Ethernet port for network control via WebGUI.
- RS-232 Port: Serial port for control via RS-232 commands.
- IR EXT Port: Connects the external IR receiver cable for extended remote control range.
- HOST 1-4 Ports: USB 3.0 Type B ports for connecting to your computer hosts.
- DEVICE 1-4 Ports: USB 3.0 Type A ports for connecting your USB peripheral devices.
- DC 24V Power Input: Connects the included power adapter.
Image 4.1: Rear panel of the OREI UKM-404, detailing the TCP/IP, RS-232, IR EXT, Host (USB Type B), Device (USB Type A), and DC 24V power input ports.
5. Setup Instructions
Follow these steps to set up your OREI UKM-404:
- Connect Host Computers: Use the provided USB 3.0 Type A to Type B cables to connect your four computer hosts (PCs, laptops) to the HOST 1-4 ports on the rear panel of the UKM-404.
- Connect USB Devices: Connect your USB peripheral devices (keyboard, mouse, printer, scanner, webcam, microphone, etc.) to the DEVICE 1-4 USB 3.0 Type A ports on the rear panel.
- Connect Power: Plug the included 24V DC power adapter into the DC 24V power input on the rear panel, then plug the adapter into a power outlet.
- Power On: Press the power button on the front panel to turn on the UKM-404. The device is plug-and-play and does not require any driver installation.
- Optional IR Extension: If desired, connect the IR Receiver Cable to the IR EXT port on the rear panel and place the IR receiver in a convenient location for remote control operation.
Image 5.1: Connection diagram illustrating how to connect four host computers (USB Type B) and four USB peripheral devices (USB Type A) to the OREI UKM-404.
Note: The USB 3.2 Gen 1 ports do not support DisplayPort™ Video (DP Alt Mode) or Power Delivery (PD).
6. Operation
The OREI UKM-404 offers multiple methods for switching USB device assignments between hosts:
6.1 Front Panel Buttons
Each of the four DEVICE sections on the front panel has four buttons labeled H1, H2, H3, and H4. To assign a specific USB device to a host, press the corresponding host button (e.g., H1 for Host 1) within that device's section. The LED next to the selected host button will illuminate to indicate the active connection.
6.2 IR Remote Control
The included IR remote control provides convenient wireless switching. Each row of buttons on the remote corresponds to a DEVICE (1-4), and each column corresponds to a HOST (H1-H4). Press the button that matches the desired device and host combination to switch. Ensure the remote has a clear line of sight to the IR receiver on the front panel or the external IR receiver.
Image 6.1: Demonstrates easy switching of USB devices between computers using the included remote control or the front panel buttons.
6.3 RS-232 Control
For advanced control and integration into automation systems, the UKM-404 can be controlled via RS-232 commands. Refer to the detailed command set in the full user manual for specific instructions on serial communication.
6.4 WebGUI Control
The device features a built-in WebGUI for network-based control. Connect the UKM-404 to your network via the TCP/IP port. Access the WebGUI through a web browser using the device's IP address to manage and switch device assignments remotely. Consult the full user manual for initial setup and access details for the WebGUI.
7. Specifications
| Feature | Detail |
|---|---|
| Model Number | UKM-404 |
| USB Standard | USB 3.2 Gen 1 (USB 3.0) |
| Data Transfer Rate | Up to 5Gbps |
| USB Host Ports | 4x USB Type B |
| USB Device Ports | 4x USB Type A |
| USB-A Port Power Output | 5V/1.5A per port |
| Control Methods | Front Panel Buttons, IR Remote, RS-232, WebGUI |
| Operating System Compatibility | Windows, Linux, macOS |
| Dimensions (L x W x H) | 8 x 6 x 1.5 inches (270mm x 166mm x 30mm) |
| Weight | 2 pounds (1.16kg) |
| Material | Heavy Duty Metal Enclosure |
| Power Supply | DC 24V |
Image 7.1: Technical specifications of the OREI UKM-404, highlighting its compact and lightweight design, dimensions, weight, and metal enclosure.
8. Troubleshooting
If you encounter issues with your OREI UKM-404, please refer to the following common troubleshooting steps:
- No Power: Ensure the 24V DC power adapter is securely connected to both the UKM-404 and a working power outlet. Check if the power indicator LED on the front panel is lit.
- Devices Not Detected:
- Verify that all USB cables (Type A to Type B for hosts, Type A for devices) are securely connected.
- Ensure the correct host is selected for the device you are trying to use, either via the front panel buttons or remote control.
- Try connecting the USB device directly to the computer to confirm the device itself is functional.
- Restart the UKM-404 unit and the connected computers.
- Switching Issues:
- If using the IR remote, ensure there is a clear line of sight to the IR receiver. Replace remote batteries if necessary.
- Test switching using the front panel buttons to isolate if the issue is with the remote or the unit itself.
- Slow USB Speeds: Ensure all connected cables are USB 3.0 compatible. While the UKM-404 is backward compatible, using older USB 2.0 or 1.1 cables/devices will limit speeds to their respective standards.
9. Warranty and Support
OREI stands behind the quality of its products. The UKM-404 comes with the following:
- 12-Month Manufacturer's Warranty: Covers defects in materials and workmanship under normal use.
- Lifetime OREI Tech Support: Access to technical assistance for the lifespan of your product.
For warranty claims, technical support, or further assistance, please contact OREI customer service through their official website or the contact information provided with your purchase documentation.
