1. 2x 5.25", 2x 3.5" Disk Drive Bay 2. 1x PS/2, 2x USB2.0 ... height rackmount chassis2. Heavy duty steel chassis3. Shock-resistant disk drive Bay to holds 2x 5.25" and 2x 3 ... .5" disk drivers4. Support full-size/half-size SBC or Micro/ ... SwitchSpecifications System Construction4u Rackmount Heavy-Duty Steel Chassis,Compact 19"Disk Driver Bay3.5" x2, 5.25" x2Cooling System1x cooling ...