• Total 4 bays
• Accepts up to 12x13"  mother board
• 7 x 4cm fans
• 2 x 4cm fans
• front access USB port

Specifications:

• Drive Bays:
  1x slim CDROM or FDD
  1 x5.25" open,
  2x 3.5" Hot/swap (SATA,SCSI)
• One PCI Riser card
• Operational temperature range: 1 ~ 50°C
• Cooling Fans:  5x4cm in the middle, 2 x 4cm fans in the rear
• Power Supply
  ATX - 350-500w
• Dimensions: 19" x 25.6" x 1.74"(W x D x H)
• Gross weight: 28 lbs

Options:

• Low Profile CPU fans
• Riser card with ribbon cable (see riser card notes)
• I/O shield for different mainboard
• Black only
• Sliding Rails 
• 2 x Hot/Swap Tray ( SATA, SCSI U320)