The case specification Factor of Form Steel is the mid-tower material. 4.0mm tempered glass motherboard with expansion support for E-ATX (width: less than 280mm), ATX, M-ATX, and ITX Slot 7 Behind MB, internal 2.5" bays Tray: two 2.5-inch SSDs Hard Drive Cage: One 2.5-inch SSD or two 3.5-inch HDDs 2 x 2.5-inch SSD Internal 3.5" Bays Behind MB Tray Hard Drive Cage: Mounting two 3.5-inch HDDs or one 2.5-inch SSD fan Two 200mm 3-PIN 800 RPM ARGB fans (front) and one 120mm 3-PIN 1100 RPM fan (rear) are included. Support from Fans: Front: either three x 120mm or two x 140mm Top: either two 120mm or two 140mm PSU chamber top: 2 x 120mm** Radiator: 1 x 280/360 mm in front 1 x 240 / 280 mm at the top Interface for I/O The power button The reset button Control the lighting mode with an LED button One HD audio Two times