Table 1. USB specificationsPowerEdgeR750xa system USB specifications
Front
Rear
Internal (Optional)
USB port type
No. of ports
USB port type
No. of ports
USB port type
No. of ports
USB 2.0-compliant port
One
USB 2.0-compliant port
One
Internal USB 3.0-compliant port
One
Micro-USB 2.0, iDRAC Direct
One
USB 3.0-compliant ports
One
NOTE The micro USB 2.0 compliant port can only be used as an iDRAC Direct or a management port.
NOTE The USB 2.0 specifications provide a 5 V supply on a single wire to power connected USB devices. A unit load is defined as 100 mA in USB 2.0, and 150 mA in USB 3.0. A device may draw a maximum of 5 unit loads (500 mA) from a port in USB 2.0; 6 (900 mA) in USB 3.0.
NOTE The USB 2.0 interface can provide power to low-power peripherals but must adhere to USB specification. An external power source is required for higher-power peripherals to function, such as external CD/DVD Drives.