| Media tray (on front):One DVD drive (can be either a CD-RW/DVD-ROM or DVD/RW drive)Two USB v2.0 portsFront system LED panelTwo battery backup unit bay locations, which support the SAS RAID controller modules
 Blade bays (on front): Six hot-swap blade server bays  Disk storage module bays (on front): Two storage bays, each containing up to six 3.5-inch disk drive bays or twelve 2.5-inch disk drive bays. Module bays (on rear):One hot-swap advanced management module bayFour hot-swap power module baysFour hot-swap fan module baysFour hot-swap I/O module baysOne hot-swap serial pass-thru module bay
 Power modules:Minimum: Two hot-swap power modules.Maximum: Four hot-swap power modules
 Cooling:  Four variable-speed, hot-swap fan modules Two fans in each power supply cool the disk storage modules Management module:One hot-swap advanced management module
 | Environment:Air temperature:BladeCenter S system on:Altitude: 0 to 914 m (3000 ft) 10° to 35°C (50° to 95°F)Altitude: 914 m to 2134 m (3000 ft to 7000 ft) 10° to 32°C (50° to 90°F)
BladeCenter S system off: -40° to 60°C (-40° to 140°F).
Humidity: 8% to 80%Acoustics: declared sound power level: 6.3 to 6.8 bels
 Electrical input:Sine-wave input (50 - 60 Hz single-phase) requiredInput voltage (110 V ac):Minimum: 100 VrmsMaximum: 127 Vrms
Input voltage (220 V ac):Minimum: 200 VrmsMaximum: 240 Vrms
 Heat output: Approximate heat output in British thermal units (BTU) per hour: Minimum configuration: 1365 Btu per hour (400 watts)Maximum configuration: 11942 Btu per hour (3500 watts)
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