What’s max refresh rate supported for HDMI 4K?

tpc68
It supports up to 60Hz of input refresh rate and 30Hz of output refresh rate at HDMI 4K

This product is not working properly, help!

888
Please try the following methods to solve your problem:1. If you are using USB devices (keyboard or mouse, for example) on your desktop PC, please ...

How can I program this product?

241u
This product is not programmable, however, there might be third party software that can program Plug & Play product like this one, so please se...

Does this product require driver / Where can I find the driver of this product?

241u
This product is Plug & Play, it means once you plug in the product, it will be installed on your computer automatically, so you don't need a d...