Name: 4K60 HDMI-over-Fiber Extender with USB KVM (10km)
Brand: KanexPro
SKU: EXT-HD4KFIBKVM-10KM

Question 1

What is the video bandwidth and HDMI/HDCP compliance of the EXT-HD4KFIBKVM-10KM?

Accepted Answer

It supports 18Gbps video bandwidth and is compliant with HDMI 2.0b and HDCP 2.2.

Question 2

What is the highest resolution the EXT-HD4KFIBKVM-10KM passes?

Accepted Answer

It handles resolutions up to 4096x2160p60 and 3840x2160p60, and also carries 1920x1200p60RB, 1080p, and 720p formats.

Question 3

How does the EXT-HD4KFIBKVM-10KM carry keyboard and mouse control into a system?

Accepted Answer

It passes USB 1.1 keyboard and mouse traffic in both directions: connect the computer to the transmitter's USB HOST port and the keyboard and mouse to the receiver's K&M USB-A ports, so an operator at the display end can drive the source computer over the same fiber link.

Question 4

How does the EXT-HD4KFIBKVM-10KM handle EDID with the displays in a system?

Accepted Answer

EDID is managed automatically: if both the transmitter and receiver HDMI outputs have displays connected, it compares the two EDIDs and selects the lower, more compatible one; if only one end has a display, it copies that sink's EDID.

Question 5

What plugs into the transmitter and receiver of the EXT-HD4KFIBKVM-10KM?

Accepted Answer

At the transmitter, connect the source to HDMI IN, a local display to the HDMI loop OUT, and a computer to the USB HOST (USB-B) port. At the receiver, connect the display to HDMI OUT, speakers to the 3.5mm AUDIO OUT, and a keyboard and mouse to the K&M USB-A ports.

Question 6

What fiber and connector does the EXT-HD4KFIBKVM-10KM link use?

Accepted Answer

The link runs on a 10G SFP+ module with an LC connector: connect the transmitter's LC FIBER OUT to the receiver's LC FIBER IN with a single fiber-optic cable.

Question 7

The EXT-HD4KFIBKVM-10KM shows no image at the display. What should I check?

Accepted Answer

Confirm the transmitter's POWER LED is red and the IN LED is green, which shows a source signal is detected on the HDMI IN. Then confirm the LINK LED is green on both units for a normal fiber signal, and check the OUT LED, which lights when a display is connected to the HDMI output.

Question 8

The LINK LED on the EXT-HD4KFIBKVM-10KM is not green. What is wrong?

Accepted Answer

The LINK LED lights green only when the transmitter and receiver have a normal optical-fiber connection. Verify the fiber runs from the transmitter's LC FIBER OUT to the receiver's LC FIBER IN, confirm the 10G SFP+ LC modules are seated, and check the fiber type against the distance in use (up to 10

Question 9

How far will this run, and on what fiber?

Accepted Answer

Up to 10km over single-mode fiber and up to 300m over OM4 multimode, using LC connections and 10G SFP+ optics. That is well beyond the roughly 100m limit of HDBaseT and Cat-based extenders, which is the reason to choose fiber for inter-building and campus-scale runs.

Question 10

Is it true 4K60 4:4:4, and does it pass HDR and lossless audio?

Accepted Answer

Yes. It carries uncompressed 4K60 4:4:4 at 18Gbps (HDMI 2.0b) with HDCP 2.2, and passes HDR10, HDR10+, Dolby Vision and HLG. Audio includes LPCM up to 7.1, Dolby TrueHD, Dolby Digital Plus and DTS-HD Master Audio. Unlike some long-distance fiber products that fall back to 4:2:0, chroma is not subsam