MB520-KGNN-S01 and MB520-WGNN-S01 are the model numbers. Black and white are the exterior colors. Materials: ABS plastic, exterior steel, and tempered glass; dimensions (L x W x H) of the left side panel's tempered glass are 502 x 210 x 498 mm (including protrusions); the body size is 443 x 210 x 498 mm. 50L of volume Support for Motherboards Mini ITX, Micro ATX, ATX, SSI CEB, and E-ATX* (*may affect cable management feature; up to 12" x 10.7" motherboards) 7 3.5" Drive Bays 2 2.5" Drive Bays Expansion Slots Three I/O Panels Two USB 3.2 Gen 1 Type-A and Type-C devices One 3.5mm Audio+Mic Headset Jack and one Reset/ARGB button Contains Add-ons Front Pre-installed Fans by ARGB Fans Hub Three pre-installed CF120 ARGB fans on the rear and one MasterFan Lite 120 fan on the top 3x 120mm, 2x 140mm Front Fan Support