• Industrial standard 19" 4U metal chassis with locable door
• Designed for AT/ATX motherboard
• 8 x 5.25 bays Open (all horizontal) 
• RM-508-1 has 2x8cm fans; RM-508-2 has 3x8cm
• Adjustable hold-down clamps

Specifications:

• Power and reset switch
• Drive Bays: 8 x 5.25" open, all horizontal
• floppy drive can be mounted in 1x5.25" (mounting kit included)
• Internal drive bay options: by hanging bracket on the enforce bar up to 3 sets (1-3 drives)
• Operational temperature range: 0 ~ 55º C
• Power LED, HDD LED
• Cooling Fan: 2 or 3 x 8cm fans
• Power supply (All UL/CSA/TUV certified):
  AT/ATX - 250w~550w
  AT/ATX mini redundant(RPD-300ATX) or 2x400/500w
• Dimensions : 19" x 21.7"/26.7" x 6.97" (W x D x H)
• Gross weight: 40/45 lbs (w/o power supply)

Options:

• 550W or 2x400/2x500W for Dual Intel Xeon or Dual AMD CPU MB
• Internal 3.5"  bay (up to 6)
• Data carriers for RAID applications
• Alarm for fan and temperature
• Custom SCSI LVD cable
• 14-slot industrial passive backplane and SBC
• Ball-bearing sliding rails