Pny usb metal design hook system 32gb the micro hook attache is a tiny metal usb with a durable hinged hook flip the hinged hook up to create a low profile design and professional look perfect complement for ultrabooks usb 20 compliant and 11 compatible works with windows 7 windows vista windows xp windows me windows 2000 mac os 86 and higher linux kernel 24 non compatible windows 98 write speed up to 8mbs read speed up to 25mbs warranty 2 years