- M/B : 12" x 10.6" e-ATX form factor(SSI CEB) - Dimension (mm/inch) : 482 x 480 x 177.5 (19" x 18.8" x 7") - Drive bays : 5.25" bay x 6(ext.), 3.5" bay x 3/2(ext./int.), Slim CD-ROM x 1 - Power supply : PS2 power or Mini-Red. PSU           - M/B : 12" x 10.6" e-ATX form factor(SSI CEB) - Dimension (mm/inch) : 482 x 410 x 177.5 (19" x 16.1 " x 7") - Drive bays : 5.25" bay x 6(ext.), 3.5" bay x 3/2(ext./int.) - Power supply : PS2 power or Mini-Red. PSU           - M/B : 12" x 13" e-ATX form factor (SSI EEB 3.5V & CEB) - Dimension (mm/inch) : 482 x 410 x 177.5 (19" x 16.1 " x 7") - Drive bays : 5.25" x 2 (ext.), 3.5" x 1/ 2 (ext./ int.) - Power supply : PS2 power or Mini-Red. PSU           - M/B : 12" x 13" e-ATX form factor (SSI EEB 3.5V & CEB) - Dimension (mm/inch) : 482 x 410 x 177.5 (19" x 16.1 " x 7") - Drive bays : 5.25" x 4 (ext.), 3.5" x 1/ 2 (ext./ int.), Slim CD-ROM x 1 - Power supply : PS2 power or Mini-Red. PSU           - M/B : 12" x 13" e-ATX form factor (SSI EEB 3.5V & CEB) - Dimension (mm/inch) : 482 x 410 x 177.5 (19" x 16.1 " x 7") - Drive bays : 5.25" x 4 (ext.), 3.5" x 1/ 2 (ext./ int.), Slim CD-ROM x 1 - Power supply : PS2 power or Mini-Red. PSU           - M/B : 12" x 13" e-ATX form factor (SSI EEB 3.5V & CEB) - Dimension (mm/inch) : 482 x 560 x 177.5 (19" x 22" x 7") - Drive bays : 5.25 x 6 (ext.), 3.5 x 3/ 2 (ext./ int.), Slim-CD ROM x 1 - Power supply : PS2 power or Mini-Red. PSU