USB-C to USB-C Extender: 4K60, Data & 100W over CAT6a
The EXT-USBC2C4K-40M carries USB-C video, USB 3.2 data, touch return and 100W charging up to 40m over one CAT6a cable at 4K.
Overview
If a KanexPro collaboration product is showing no video, no audio, or incorrect output, work through the steps below in order.
Step 1 — Verify Physical Connections
- Confirm the source (laptop, PC) is powered on and outputting video.
- For USB-C: confirm the cable supports video (DisplayPort alt mode). Not all USB-C cables carry video.
- For HDMI: confirm the cable is fully seated at both ends.
- Confirm the display is powered on and set to the correct HDMI input.
- For video wall: confirm each display is connected to the correct numbered output port on the controller.
Step 2 — Check Input Selection
- Press the front panel input button or use the IR remote to manually select the active source.
- Auto-switching may not activate if a source was connected before power-on. Re-connect the source after the unit is powered.
- For COL-HUD-42: verify the correct output (HDMI OUT 1 or OUT 2) is routed to the correct display.
Step 3 — Verify USB-C Cable Compatibility
- Use a USB-C cable rated for Thunderbolt 3/4 or USB4 to ensure DisplayPort alt mode support.
- Shorter cables (under 1m) are more reliable for 4K60. Test with a different cable if no video appears.
- If using a dock or adapter between the laptop and the USB-C input, bypass it and connect directly to isolate the issue.
Step 4 — Check HDCP
- HDCP-protected content requires all devices in the chain to support HDCP. Test with a non-protected source to isolate.
- Ensure the display supports HDCP 2.2 for 4K protected content.
Step 5 — Audio Issues
- Confirm the audio output is connected — balanced XLR/TRS for line output, HDMI for display audio.
- Verify the audio source is not muted at the laptop or source device.
- For Dante audio (SW-xPS series): ensure the Dante network is on the same subnet and Dante Controller is configured with correct routing.
- For analog audio: check balanced cable polarity and confirm the amplifier or DSP input gain is set appropriately.
Step 6 — Video Wall — Incorrect Layout or Orientation
- Confirm display mode is set correctly via RS-232 command or front panel button.
- For VW-SP1X44K: use the included remote to cycle through layout modes (2×2, 1×4, 1×2, etc.).
- For VW-HDUSBC1X4: verify display mode using RS-232 command SET VW_MODE x where x is 1–8.
- Bezel correction values may need adjustment if the image appears misaligned across panels.
Step 7 — Power Cycle
- Power off all displays.
- Power off the switcher or controller.
- Wait 10 seconds.
- Power on the switcher/controller first, wait 15 seconds.
- Power on displays.
- Reconnect source devices.
Still Not Resolved?
Contact KanexPro technical support at support@kanexpro.com or 888.975.1368 with: SKU, source device type, display model, cable type, and description of symptoms.
