Special design of fixing PCI card in the system 7 pieces max
Front door foam filter design for minimize dust inflow
Front door with key lock for better security
Dual USB 2.0 connector in front panel

Details:
Chassis Type: Rackmount
Form Factor: 4U
Model: SL -450A
Color: Out surface painting Black only
Case Material: 0.8mm-1.2mm / SGCC
Motherboard Compatibility: 12" x 9.6" ATX/M-ATX/Mini-ITX  (smaller than 305mm*245mm)
Dimensions (L x W x H): 17.72x16.93x6.97(inches)/450x430x177(mm)
Weight: 9kg/20 lbs

Expansion
Internal 3.5" Drive Bays: 7 x 3.5 HDD
                                       2x 5.25 DVD-ROM
Expansion Slots: 7 x PCI slot

Front Ports
Front Ports: 2 x USB 2.0,    2 x LED

Cooling System
120mm Fans: 1 x 1500 RPM Fan(There are two 80mm fan position, you need to purchase their own.)

Packing list

Server Case
Keys
Screws