4U GPU Enhanced Standard Chassis 4x 3.5" HDD + 6x 5.25" Bays - 8x Full Height Slots for 4x Double Width GPU
Rosewill RSV-R4100U 4U Server Chassis Rackmount Case | 7 3.5" | www.rosewill.com
Amazon.com: SilverStone Technology 4U Rackmount Server Chassis with 3 X 5.25 Front Bays with CEB/ATX/mATX/Mitx Support RM400 Cases SST-RM400 : Electronics