Design for Raspberry Pi: Supports installation of 4 Raspberry Pis and 4 ssds, compatible with any 2.5” Solid State Drive (7mm/9mm) and Rpi 4B/3B+, and other B/B+ models. Compatible with PoE/PoE+ HAT: You can use Raspberry Pi official POE+ HAT and our POE HAT on it, search B082ZLDMZ6 to get mini PoE board or search B09MCGFX12 to get fan version.
eBay