Switch between 18-?? hdmi PC sources for live production I'm looking for a device that takes a minimum of 18 HDMI-PC (max 36) sources at 1080p60 for a possible venture I'm going to getting in to. I'm going to be taking these sources and using them for monitoring/broadcasting/recording a show. (Edit: Note: Some of the inputs will only support 1080p60 and 720p60. No in-between. (Can't do 720 due to requirements in business agreement))

I know of the ATEM devices by Blackmagic, but, they don't state they do 1080p60 and this may present a problem. Not to mention in order for all 18 PCs to connect i would have to buy a converter for each connection as SDI is not usually a native connection on most PCs.

(Notes: SDI is a completely new connection to me as of today. I have never done anything with broadcasting equipment)
Only the 4K models of the Atom switchers support 1080p in 60 fps, like the ATEM 2 M/E Production Studio 4K.

Although a software control panel is included, I would prefer a hardware panel. Switching between 18+ input sources will be so stressful, that you don't have time looking where the mouse pointer is. A hardware panel has big buttons and knobs that you can operate without looking at it.

These switchers all work with SDI, because HDMI only works with cable lengths up to 10 meter, whereas SDI cables can be up to 300 meter long. See this comparison.