Cooler Master HAF XB Evo case, windowed top panel version
Full Specs here
https://www.coolermaster.com/catalog/legacy-products/cases/haf-xb-evo/
Added a DIY front usb C motherboard header
Unique LAN box form factor, with double decker layout and removable motherboard tray suitable for a lab bench. Lots of space for accessories, drives or custom airflow installations.