Specs UBS on Nano
USB Features
USB Ports Supported: 2 Ports — 2 Device Maximum
USB Device Classes Supported: Human Interface Devices (HID) or Printer
Device Connection & Detection: Automatic, Plug n Play Operation
Maximum Message Transfer: 4096 Characters
USB Message Start/ End Delimiters: Up to two user configurable Start Delimiters, up to two user configurable End Delimiters
Power per USB Port: .5 A per Port
