Features:

3U rackmount design
Sixteen hot-swappable SATA (I or II) / SAS drive bays
Four internal SFF-8087 Mini SAS connectors support up to sixteen 3.5" hot swappable SATA (I or II) or SAS hard disk drives;
Hot-swappable HDD tray with special designed power-off and lock mechanism.
1 x slim CD-ROM bay, 2 x 2.5" OS drive brackets, 16 x 3.5" hot-swappable drive bays, 1 x 3.5" OS drive bracket.
Six ball-bearing cooling fans for better ventilation
Support EEB (12"x13"), CEB(12"x10.5"), ATX (12"x9.6"), Micro ATX (9.6" x 9.6") motherboard (If working with standard power supply, four expansion slots are available; if working with redundant power supply and optional back window, seven expansion slots are available)
Screwless top cover
Redundant power connectors
RoHS Compliant
Smooth border prevent lacerating your skin

Drive Bay: 16 x hot-swappable SATA/SAS drive bays, 1 x slim CD-ROM bay, 2 x 2.5" OS drive brackets, 1 x 3.5" OS HDD bracket
Cooling Fan: 4 x 80mm middle fans, 2 x 60mm rear fans
Switch: Power ON/OFF x 1, System reset x 1
Indicator:Power ON/OFF x 1, HDD x 1, NETWORK X 2
Connector:One front accessible USB port, four internal SFF-8087 Mini SAS connectors, eight 4-pin molex redundant power connectors.
Motherboard Compatibility: Support EEB (12"x13"), CEB(12"x10.5"), ATX (12"x9.6"), Micro ATX (9.6" x 9.6") (If working with standard power supply, four expansion slots are available; if working with redundant power supply and optional back window, seven expansion slots are available)
Power Supply Options: Standard ATX power supply, mini redundant power supply
Dimensions ( W x D x H ): 16.9" x 25.5" x 5.1 " (430mm x 650mm x 130.1mm)
Packing:Double boxes, 22" x 33" x 9.5"
Weight: 12.3 kg/27 lb (NET) 17.7 kg/39 lb (GROSS)
Environment Temperature:0/55 °C, 32/131 °F (Operating) -20/60 °C, -4/140 °F (Non-Operating)
Relative Humidity: 5% to 95%,non-condensing
Vibration ( 5-500 Hz ):1 Grms (Operating), 2 G (Non-Operating)
Shock : 10 G(with 11ms duration, half sine wave) (Operating), 30 G (Non-Operating)