Expansion Bays 1 x 5.25" Half-Height (External Access) 1 x 5.25" Full-Height (External Access) 1 x 3.5" Third-Height (External Access) 1 x 5.25" (External Access) 1 x 3.5" (Internal Access) 1 x 3.5" (External Access) 1 x 5.25" External Slim Line (1/6H) 1 x 2.5" 1/8 Height 1 x 3.25" (External Access) 1 x 2.5" (Internal Access) 1 x 5.25 in. Front-Accessible (Slim Line) 2 x 5.25" Half-Height (External Access) 2 x 3.5" Third-Height (External Access) 2 x 3.5" Third-Height (Internal Access) 2 x 5.25" (External Access)

2 x 3.5" (Internal Access) 2 x 3.5" (External Access) 2 x 2.5" 1/8 Height 2 x 2.5" 2 x 2.5" SFF (Internal Access) 3 x 5.25" Half-Height (External Access) 3 x 3.5" Third-Height (internal Access) 3 x 5.25" (External Access) 3 x 3.5" (Internal Access) 3 x 3.5" (External Access) 4 x 5.25" Half-Height (External Access) 4 x 3.5" Third-Height (internal Access) 4 x 5.25" (External Access) 4 x 3.5" (Internal Access)

4 x 3.5" (External Access) 4 x 1" Hot-swap Ultra320/160 SCSI 4 x 3.5" Third-Height (Hot Swap) 5 x 3.5" (Internal Access) 5 x 5.25" 5 x 5.25" (External Access) 5 x 5.25" - 1/2H Front Accessible 5 x 3.25" (Internal Access) 5 x 5.25 Half-Height (External Access) 6 x 1" Ultra320/160 SCSI 6 x 3.5" (External Access) 6 x 3.5" 6 x 3.5" (Internal Access) 6 x 5.25 (External Access)

6 x 3.5" Third Height Hot Swap 6 x 3.5" Third Height 6 x 3.5" Hot-Swap 6 x 3.5" Third Height (Internal) 7 x 5.25" (External Access) 7 x 3.5" (Internal Access) 8 x 1" Hot-swap Ultra320/160 SCSI 8 x 1" Serial ATA (Hot Swap) 8 x 3.5" (External Access) 8 x 3.5" (Internal Access) 8 x 3.5" Third Height (Hot Swap) 9 x 5.25" (External Access) 9 x 3.5" (Internal Access) 10 x 3.5 (Internal) 12 x 3.5" (External Access) 12 x 5.25" (External Drive Bays)