Compatibility: Arduino Uno 328, Arduino Diecimila/Duemilanvoe 328, Arduino Mega 2560 (suggestion), Arduino Mega 1280
Works with standard (dual 5/3.3V) and 3.3V-only (for example, Arduino Pro) boards.
Operates over the extended -40°C to +85°C temperature range
Complies with USB Specification Revision 2.0 (Full-Speed 12Mbps Peripheral, Full-/Low-Speed 12Mbps/1.5Mbps Host) The following device classes are currently supported by the shield:
HID devices, such as keyboards, mice, joysticks, etc.
Mass storage devices, such as USB sticks, memory card readers, external hard drives (FAT32 Type File System – Arduino Mega only). For Pin configuration download pdf. http://tinkbox.ph/sites/tinkbox.ph/files/downloads/Keyes%20-%20USB%20Host%20Shield.pdf