Dell VxRail™ E660, E660F, and E660N Technical Specifications

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USB ports specifications

The following table describes the USB port specifications of VxRail E660, E660F, and E660N:


Front		Rear
USB port type	No. of ports	USB port type	No. of ports
USB 2.0-compliant port	One	USB 2.0-compliant port	One
Micro-USB, iDRAC Direct	One	USB 3.0-compliant port	One

NOTE:The micro USB 2.0 compliant port can only be used as an iDRAC Direct or a management port.

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.

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.