Name: 4K60 & Ultrawide HDMI KVM Extender with USB 3.2 over CAT6a (40m/130ft)
Brand: KanexPro
SKU: EXT-HDMIKVM4K-40M

Question 1

What is the maximum video resolution?

Accepted Answer

4K60 4:4:4 uncompressed over HDMI 2.0b at 18Gbps. Ultrawide 5120x1440 and 3440x1440 run at 60Hz 4:4:4. 5120x2160 runs 4:4:4 at 50Hz or 4:2:0 at 60Hz. 5120x2880 is not supported.

Question 2

What USB speed does it deliver?

Accepted Answer

USB 3.2 Gen 1 at up to 2.5 Gbps. It does not support 5 Gbps operation.

Question 3

Can a control system operate it?

Accepted Answer

Yes. RS-232 passes through end to end for third-party control, and a separate ASCII command set on the SERVICE port (115200 baud, 8-N-1) handles HDCP mode, EDID selection, output source and USB port power.

Question 4

How is audio extracted?

Accepted Answer

Analog audio is de-embedded at both the transmitter and the receiver via a 3.5mm output, LPCM 2CH at 32-192kHz.

Question 5

What cable is required?

Accepted Answer

CAT6a, U/FTP, 23AWG minimum, terminated straight-through at both ends. Do not cross-connect. Shielded terminations at both ends are recommended.

Question 6

How is the kit powered?

Accepted Answer

One DC 24V/2A supply powers the link. Connect it at either end - bi-directional PoC feeds the other unit over the CAT6a cable. The transmitter draws 4W and the receiver up to 25.4W.

Question 7

No video at the receiver?

Accepted Answer

Confirm the CAT6a run is straight-through, not crossover, and is U/FTP 23AWG or better. Check the LINK LED on both units — if it is off, the units are not linked. Verify the VIDEO LED at the transmitter shows a source is present.

Question 8

USB device at the receiver is not detected?

Accepted Answer

Check the USB LED: blinking indicates the link fell back to USB 2.0. Confirm the USB-B cable from the host to the transmitter is a USB 3.x cable no longer than 1.5m/4.9ft. Bus-powered devices are limited to 5V/1.5A per port.

Question 9

Does it support 5 Gbps USB 3.0?

Accepted Answer

No. It is USB 3.2 Gen 1 running at up to 2.5 Gbps, and the manual states plainly that it does not support 5 Gbps operation. That is still more than five times USB 2.0 extension. If a job genuinely requires a sustained 5 Gbps, use a dedicated USB extender such as EXT-USB3100M alongside a video extend

Question 10

What cable does it need, and can we reuse the CAT5e already in the wall?

Accepted Answer

No. It requires CAT6a, U/FTP, 23AWG minimum, terminated straight-through — not crossover. Shielded terminations at both ends are recommended, and solid-core cable at the upper end of the range. Reusing CAT5e is the most common cause of link instability on this class of product.