Name: Native USB-C DisplayPort Alt Mode 4K60 Extender over Fiber — 10G SFP+, up to 10km
Brand: KanexPro
SKU: EXT-USBC4KFIB-10KM

Question 1

What is the highest video resolution this extender carries, and at what color sampling?

Accepted Answer

The EXT-USBC4KFIB-10KM supports up to 4096x2160 at 60/50Hz, plus 3840x2160 at 60/50/30/25Hz, and holds 4K at 4:4:4. Any VESA-standard resolution is supported.

Question 2

What is the total video bandwidth, and which link rates does it support?

Accepted Answer

Video bandwidth is 32.4 Gbps. It supports HBR3, HBR2, HBR and RBR at 8.1, 5.4, 2.7 and 1.62 Gbps.

Question 3

How does the display's EDID reach the source across the link?

Accepted Answer

EDID passes from the receiver back to the transmitter, so the source reads the connected display's capabilities across the fiber run.

Question 4

How are firmware updates applied to the transmitter and receiver?

Accepted Answer

Each unit has a SERVICE port, a USB-C update port used for firmware updates.

Question 5

What plugs into what for a basic point-to-point run?

Accepted Answer

Connect the source USB-C output to the transmitter IN port, run an LC fiber cable from the transmitter SFP+ OUT to the receiver SFP+ IN, and connect the receiver OUT port to the display. Each unit uses a 24-pin USB-C connector at IN and OUT.

Question 6

What kind of fiber and module does the link need, and how far does each reach?

Accepted Answer

The link uses a 10G SFP+ module with LC connectors. It runs up to 10km over single-mode fiber, or up to 300m over OM4 multi-mode fiber.

Question 7

No image on the display. What do I check first?

Accepted Answer

Confirm the green POWER LED is lit on both the transmitter and the receiver, which shows each is powered on. Then check that the source USB-C is in the transmitter IN port and the display is on the receiver OUT port.

Question 8

The LINK indicator is not lit green. What does that mean and what should I check?

Accepted Answer

The green LINK LED stays lit only when the transmitter and receiver have a good optical-fiber connection, so if it is off, check the LC fiber between the transmitter SFP+ OUT and the receiver SFP+ IN. Confirm the run is within 10km on single-mode fiber, or within 300m on OM4 multi-mode fiber.

Question 9

How far can this actually run, and on what fiber?

Accepted Answer

Up to 10km (about 6.2 miles) over single-mode fiber, or up to 300m over OM4 multi-mode. It uses standard 10G SFP+ modules with LC connectors, so the same transmitter and receiver serve either fiber type — you match the optic to the plant you have.

Question 10

My source is a USB-C laptop, not HDMI. Do I need an adapter?

Accepted Answer

No. The input is native USB-C running DisplayPort Alt Mode, so a USB-C source connects directly. That removes the HDMI/DisplayPort dongle that most fiber extenders in this class require, and one failure point with it.