What Is the UKM-201C?
The OREI UKM-201C is a 2-port USB-C and HDMI KVM switch. It allows you to control two computers using one keyboard, mouse, display, and other USB peripherals.
The UKM-201C is useful for users who want to switch between a USB-C laptop and an HDMI desktop or computer from one workstation without constantly unplugging cables.
The device includes one USB-C input with DisplayPort Alt Mode and Thunderbolt compatibility, one HDMI input, one HDMI output, two USB 2.0 keyboard/mouse ports, three USB 3.0 ports for shared peripherals, and a 3.5mm stereo audio output. It supports HDMI 2.0, HDCP 2.2, video resolutions up to 4K@60Hz with HDR, and USB 3.0 data transfer speeds up to 5Gbps. It also supports up to 100W USB-C Power Delivery charging for the USB-C connected computer.
The UKM-201C can be switched using the top-panel SELECT button or the included wired remote control.
IMPORTANT — USB-C Video Requires DP Alt Mode or Thunderbolt
The USB-C input on the UKM-201C requires the connected USB-C device to support video output through USB-C.
This is commonly called DisplayPort Alt Mode or DP Alt Mode.
Not every USB-C port supports video. Some USB-C ports only support charging or data transfer.
If a USB-C laptop, or computer does not show video through the UKM-201C, check whether that device supports DP Alt Mode or video output over USB-C.
MacBooks have Thunderbolt ports instead of DP Alt Mode port which would also work
IMPORTANT — UKM-201C Supports One Display Only
The UKM-201C has one HDMI output.
This means it supports one monitor, TV, or projector.
It does not support a dual-monitor setup. If you want to use two computers with two displays, you can use the UKM-201-2C.
IMPORTANT — PC1 Uses USB-C, PC2 Uses HDMI + USB-C
The UKM-201C has two computer input paths:
- PC1 connects through USB-C
- PC2 connects through HDMI for video and USB-C 3.0 for USB data/KVM control
For PC2, the HDMI cable carries video, but the USB-C connection is needed for keyboard, mouse, and USB peripheral sharing.
If PC2 only has HDMI connected and the USB-C data cable is not connected, you may get video, but keyboard, mouse, and shared USB devices will not work with that computer.
IMPORTANT — 100W Power Delivery Requires a Proper USB-C Charger
The UKM-201C supports up to 100W Power Delivery charging through the USB-C PD input.
To use charging, connect your laptop’s USB-C power adapter to the PD input.
The actual charging speed depends on the charger, cable, and laptop power requirements.
If your laptop requires high-wattage charging, use a compatible USB-C PD charger and cable rated for the required wattage.
IMPORTANT — USB 3.0 Ports Have Power Limits
The UKM-201C includes USB 3.0 ports for shared USB devices such as USB flash drives, SSDs, or other peripherals.
Some external hard drives may not work properly if their power consumption is higher than 2.5W / 5V 500mA.
If an external hard drive is not working, try connecting it through an externally powered USB hub.
Ports and Panel Layout
| Port / LED / Button | Location | Function |
| 3.5mm Audio Out | Front panel | Stereo audio output port to connect speakers or headphones (This is an output only it doesn’t support Microphone input) |
| Control Port | Front panel | Connect the included wired remote control using the 2.5mm jack |
| USB-C 5Gbps Device Port | Front panel | Connect USB peripherals such as USB drives, SSDs, USB hubs, printers, etc. |
| 2x USB-A 3.0 5Gbps Ports | Front panel | Connect USB peripherals such as USB drives, SSDs, USB hubs, printers, etc. |
| 2x USB 1.1 Ports | Front panel | Connect a keyboard and mouse for control |
| SELECT Button | Top panel | Switches between PC1 and PC2 |
| PC1 / PC2 LEDs | Top panel | Shows which computer is selected |
| HDMI OUT | Rear panel | Connect to a TV, monitor or projector |
| PC2 HDMI Input | Rear panel | Connect a PC, laptop through its HDMI port |
| PC2 USB-C 3.0 Port | Rear panel | Connect a USB cable to the computer’s USB port |
| PC1 USB-C Input | Rear panel | Connect a computer or laptop that supports DP Alt Mode or Thunderbolt technology. |
| PD IN Port | Rear panel | Connect a USB-C power adapter for up to 100W laptop charging |
Step-by-Step Setup
- Connect the HDMI OUT port on the UKM-201C to your TV, monitor, or projector.
- Connect your keyboard and mouse to the dedicated KVM USB ports.
- Connect PC1 using a USB-C cable from the computer’s USB-C port to the PC1 USB-C input on the UKM-201C.
Make sure the PC1 USB-C port supports DP Alt Mode or Thunderbolt video output. - Connect PC2 using an HDMI cable from the computer to the PC2 HDMI input.
- Connect a USB cable from PC2 to the USB port next to the PC2 HDMI input.
- Connect any shared USB devices to the USB 3.0 ports.
Examples include USB flash drives, SSDs, webcams, printers, or other USB peripherals. - If using USB-C charging for PC1, connect a compatible USB-C PD charger to the PD input.
- If using external audio, connect speakers or headphones to the 3.5mm audio output.
- Use the SELECT button or included wired remote control to switch between PC1 and PC2.
HDMI and USB Cable Requirement — Critical
For 4K@60Hz performance, use high-quality HDMI 2.0 cables under 30 feet.
For 4K@60Hz 4:4:4, the input/output cable length should not exceed 4m. For 4K@30Hz or 1080p, cable length may reach up to 10m depending on cable quality and setup.
For USB-C video, use a full-function USB-C cable that supports video, data, and charging as needed. For MacBooks use Thunderbolt USB-C cables.
Understanding PC1 and PC2 Connections
PC1 — USB-C Computer
PC1 is designed for a USB-C computer or laptop.
The USB-C connection can carry video, USB data, KVM control, and charging when the connected device and cable support those functions.
The connected USB-C computer must support DP Alt Mode or Thunderbolt video output.
PC2 — HDMI Computer
PC2 uses HDMI for video.
PC2 also needs a USB-C 3.0 connection for keyboard, mouse, and shared USB peripheral control.
If only HDMI is connected for PC2, the display may work, but the keyboard, mouse, and USB sharing will not work.
Understanding the SELECT Button and LEDs
The SELECT button switches between PC1 and PC2.
| Selected Input | LED Behavior |
| PC1 | PC1 LED and SELECT button light blue |
| PC2 | PC2 LED and SELECT button light green |
Use the SELECT button or the wired remote control to switch control between the two connected computers.
Understanding USB Sharing
The UKM-201C allows connected USB devices to be shared between the two computers.
Supported USB devices include:
- Keyboard
- Mouse
- USB flash drive
- USB SSD
- Printer
- Webcam
- USB audio device
- Other USB peripherals
The device includes USB 3.0 ports with 5Gbps data transfer speed for supported USB devices.
For high-power external hard drives, use a powered USB hub if the drive requires more power than the UKM-201C can provide.
Understanding Audio Output
The UKM-201C includes a 3.5mm stereo audio output.
This can be used to connect:
- Powered speakers
- Headphones
- Stereo amplifier
- Desktop audio system
The audio output depends on the selected computer and the audio settings on that computer.
If there is no audio, check the computer’s audio output settings and make sure the correct audio device is selected.
What Computers Is the UKM-201C Compatible With?
The UKM-201C can work with:
- USB-C laptops with DP Alt Mode
- Thunderbolt-compatible laptops like MacBook Air / Pro
- Windows laptops
- Desktop PCs with HDMI output
- Mini PCs
- Workstations
- Home office computers
For PC1, the USB-C port must support video output.
For PC2, the computer must connect by HDMI for video and USB-C for KVM/USB control.
What Displays Is the UKM-201C Compatible With?
The UKM-201C can be connected to HDMI displays such as:
- TVs
- Monitors
- Projectors
Frequently Asked Questions
Q: What is the OREI UKM-201C used for?
A: The UKM-201C is a KVM Switch used to control two computers with one keyboard, mouse, display, and shared USB peripherals.
Q: Does the UKM-201C support dual monitors?
A: No. It has one HDMI output and does not support a dual-monitor setup. Use the UKM-201-2C for dual monitor setups.
Q: Does the USB-C input work with every USB-C laptop?
A: No. The USB-C laptop must support DisplayPort Alt Mode or Thunderbolt video output.
Q: What is DP Alt Mode?
A: DP Alt Mode allows a USB-C port to send video. If the USB-C port does not support video output, it will not display through the UKM-201C.
Q: Can the UKM-201C charge my laptop?
A: Yes. It supports up to 100W Power Delivery charging through USB-C when used with a compatible charger and cable.
Q: Does the UKM-201C come with a power adapter?
A: The package includes a USB-A to USB-C cable and a USB-C to USB-C full-function cable, but the manual does not list a separate power adapter in the package contents.
Q: Why do I get video from PC2 but my keyboard and mouse do not work?
A: PC2 needs both HDMI for video and USB-C 3.0 for KVM/USB control. Make sure the USB-C cable from PC2 is connected.
Q: Why is the power light off and the product not working?
A: Check that the power adapter is connected properly and that the HDMI input source is turned on.
Q: Why is the screen flickering or showing screen splash?
A: The HDMI cable may not meet HDMI 2.0 requirements or may be too long. Use a standard HDMI 2.0 cable and keep cable length within the recommended range.
Q: Why does my USB flash drive work but my external hard drive does not?
A: The external hard drive may require more power than the port can provide. The manual notes that devices over 2.5W / 5V 500mA may not work properly. Use a lower-power device or a powered USB hub.
Q: How do I switch between computers?
A: Press the SELECT button on the unit or use the included wired remote control.
Q: What does the blue LED mean?
A: When PC1 is selected, the PC1 LED and SELECT button light blue.
Q: What does the green LED mean?
A: When PC2 is selected, the PC2 LED and SELECT button light green.
Q: Does it have audio output?
A: Yes. It includes a 3.5mm stereo audio output.
Q: Can I connect a mobile phone or tablet through the USB-C input?
A: No, the USB-C input is for laptop or computers with a compatible USB-C port. It doesn’t work with smartphones or tablets.
Q: Does it require drivers?
A: Driver installation is not required to use the UKM-201C.
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