Details above are only about the one device...the bigger one...

I don't know anything about this stuff other than the obvious use of them.

They were installed at our company before they upgraded everything...

The work immediately once plugged in...fans kick on, lights up, etc...beyond that I can't test every port or function.

I highly recommend using air to blow out open vents, ports or even taking cover off to clean before using. I can see dust inside of them...

Selling cheap because they're heavy and shipping will reflect.

And because I can't guarantee anything...I normally don't accept returns but if you have an issue with one or both, just contact me and we'll figure it out...

Please do so before leaving negative feedback...I'll need some sort of proof or something that they don't work if so... But given their history, who gave them to me and seeing them work in action at our company, I don't see why they would have any problems... But just reach out if so... Again they are heavy so shipping will reflect... If you have any questions or need additional photos please do so or ask, before you buy... Shipping is based on location...