1.Works with standard (dual 5/3.3V) and 3.3V-only (for example, Arduino Pro)boards.
2.Operates over the extended -40°C to +85°C temperature range
3.Complies with USB Specification Revision 2.0 (Full-Speed 12Mbps Peripheral,
4.Full-/Low-Speed 12Mbps/1.5Mbps Host)
The following device classes are currently supported by the shield:
4. HID devices, such as keyboards, mice, joysticks, etc.
5.Mass storage devices, such as USB sticks, memory card readers, external hard drives (FAT32 Type File System – Arduino Mega only)