4U rackmount server chassis with 6x 5.25" drive bays, 4 x 3.5",2X2.5 in the bottom, 1 x 2.5(support up to 9.5mm) or 1xSlim ODD(12.7mm), support CEB M/B, USB 3.1 Gen 1 Type
Amazon.com: Rosewill 4U Server Chassis 11 Bay Server Case 8X 3.5 + 3X 5.25 HDD, E-ATX, Rackmount Server Case, Include Front 5X 120mm Fans Rear 2X 80mm Fans Metal Rack Mount Computer
Short Depth 4U Rack Mount Computer / Server - SR-4550I (Intel 10th Gen) | Stealth
19 Inches 4u Rack-mount Server Case Top4u630 Industrial Chassis Dustproof Shockproof Support E-atx Motherboard 630mm Depth - Computer Cases & Towers - AliExpress
NeweggBusiness - Rosewill RSV-L4500U 4U Server Chassis Rackmount Case | 15 3.5" HDD Bays | E-ATX Compatible | 6 Front 120mm Fans, 2 Rear 80mm Fans | USB 3.0, USB 2.0 | Front Panel Lock and Key | Silver/Black
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
Rosewill RSV-R4000U 4U Server Chassis Rackmount Case | 8 3.5" HDD Bays, 3 5.25" 840951133880 | eBay
Rosewill RSV-L4000U 4U Server Chassis Rackmount Case | 8 3.5" | www.rosewill.com
Inexpensive 24 Bay 4U Rack Mount Steel Atx Storage Server Case Chassis Enclosure With 6Gb/S Expander Backplane| Alibaba.com
Chenbro 4U Chassis, 21.5″ Depth, No Front Door (No Power Supply) – RackmountNet