... Shock-resistant disk drive Bay to holds 2x 5.25" and 2x 3.5" disk drivers4. Support full-size/half-size ... Heavy-Duty Steel Chassis,Compact 19"Disk Driver Bay3.5" x2, 5.25" x2Cooling System1x cooling fan with air filter ... 300w, AC input 170~270v 47~63hz, Output +3.3V@20A, +5v@30A, +12v@15A, +5VSB@2A, -12V@ 0.8A ... x12, ISA x1, 1x ISA, 2 xPICMG. Dimensions (318.5 x 256mm)PCI-14SP4DPCI x8, ISA x2, 4x PICMG. ...