UGREEN 50744 2-Port HDMI KVM Switch, 4K30, 4× USB
Overview
Correct direction is the first troubleshooting check. Similar-looking HDMI, DisplayPort and USB-C products can require completely different source and display sides.
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What it does well.
Key features
Inputs.
Outputs.
Video ceiling.
Power.
How switching and multi-display behavior works
One computer is active on the single HDMI display and shared USB set at a time. This is not a dual-monitor KVM and it does not merge the two computers.
Control: Top button or keyboard hotkey. The keyboard must be connected to a USB 1.1 port for hotkey switching. A buzzer confirms channel changes and can be disabled by the documented hotkey..
Never assume: a product advertised as “bidirectional,” “splitter” or “matrix” behaves like another topology. Follow the source/output map above.
Resolution, refresh and feature boundary
Maximum listed mode.
Interface boundary.
Audio path.
Complete-path rule.
Use scenarios
Scenario 1.
Scenario 2.
Scenario 3.
Scenario 4.
Setup and usability guidance
Best first test: one source, one short cable path, one display and 1080p60. Expand only after this baseline works.
- Step 1: Connect each computer’s HDMI output to the matching HDMI input.
- Step 2: Connect each computer to the matching USB-B host port using the two listed USB-A-to-B cables.
- Step 3: Connect the display to HDMI Output.
- Step 4: Connect keyboard and mouse to the USB 1.1 ports; use the USB 2.0 ports for other compatible peripherals.
- Step 5: Power both computers, then select a channel with the button.
- Step 6: Test hotkeys only after the keyboard is in the designated port and begin video setup at 1080p60.
Compatible devices and systems
Compatible system boundary.
Cable planning.
Audio planning.
Power planning.
What this product does
- Follows this path: Computer 1: HDMI + USB-B host link; Computer 2: HDMI + USB-B host link → selected KVM channel → one HDMI output + four shared USB-A ports.
- Supports its ceiling: Up to 4K30; 1080p60 supported.
- Uses these ports: 2 × HDMI female and 2 × USB-B host ports → 1 × HDMI female; 2 × USB 2.0 Type-A; 2 × USB 1.1 Type-A keyboard/mouse ports.
- Handles control this way: Top button or keyboard hotkey. The keyboard must be connected to a USB 1.1 port for hotkey switching. A buzzer confirms channel changes and can be disabled by the documented hotkey..
- Passes compatible audio: Compatible HDMI audio follows the selected computer to the display. No separate microphone or analogue audio switching is provided.
What this product does not do
- One display only
- 4K30 ceiling, not 4K60
- USB sharing is USB 2.0/1.1, not USB 3.x
- No separate analogue audio ports
- Keyboard hotkeys require the designated USB 1.1 keyboard port
- High-power USB devices may need their own supply
What to do
Label.
Build gradually.
Verify cables.
Power safely.
Record settings.
What not to do
Do not reverse.
Do not confuse.
Do not assume scaling.
Do not force.
Do not overclaim.
Warnings and limitations
- Power: Normally powered from the two connected computers through the included USB-A-to-B host cables; no separate adapter is required.
- Display negotiation: mixed displays can force a lower common mode or create a blank screen.
- Protected content: HDCP must be supported end to end; the device cannot bypass protection.
- Heat and moisture: indoor use only; keep dry, ventilated and away from direct heat.
- Cables: The listing gives up to 5m input + 5m output at 4K30 with suitable 28AWG cable and up to 12m + 12m at 1080p60 with suitable 26AWG cable. Treat these as best-case listed limits.
Troubleshooting checklist
No picture.
Picture drops.
Wrong resolution.
No audio.
Remote or hotkey fails.
Protected video blanks.
At a glance.
- Brand / SKU
- UGREEN 50744
- Product type
- a two-computer HDMI KVM switch that shares one HDMI display plus keyboard, mouse and two additional USB peripherals
- Signal path
- Computer 1: HDMI + USB-B host link; Computer 2: HDMI + USB-B host link → selected KVM channel → one HDMI output + four shared USB-A ports.
- Inputs
- 2 × HDMI female and 2 × USB-B host ports
- Outputs
- 1 × HDMI female; 2 × USB 2.0 Type-A; 2 × USB 1.1 Type-A keyboard/mouse ports
- Power
- Normally powered from the two connected computers through the included USB-A-to-B host cables; no separate adapter is required
- Topology
- 2-computer / 1-monitor HDMI KVM
- Video inputs
- 2 × HDMI
- Host data inputs
- 2 × USB-B 2.0
- Shared USB outputs
- 2 × USB 2.0 + 2 × USB 1.1 Type-A
- Listed maximum
- 4K@30Hz
- Switching
- Button + keyboard hotkey
- Dimensions
- 134 × 66 × 26mm
1 × UGREEN 50744 KVM switch, 2 × 1.5m USB-A-to-USB-B host cables, user manual and warranty card as listed. HDMI cables are not identified as included.