Memory sizes available: 16/32/64/128/256/512MB/1/2/4/8GB/16GB and above as required Compliant with USB specification 1.1 / 2.0 High-speed, at least 10 years of data retention OS: MS Windows 98SE/2000/Me/XP/Vista Plug-and-play, no external power supply required, USB bus-powered All drives are made with high quality Samsung/Hynix/micron memory Reading speed (USB2.0): 15Mbps Writing speed (USB2.0): 5Mbps (computer configuration dependent) Supports multi-partition and password access Supports BIOS booting as USB-ZIP or USB-HDD Professional OEM and ODM service Packing designs optional as per buyers' needs Prior to imprinting we will send you a proof for approval (if requested) Various colors optional, meets personal favorites very well With FCC, CE and RoHS certification