the data band use usb port supports hot plug and play the lanyard usb drive have no physical drive required no driver installation required (except on windows 98) storage media: flash memory usb bus-powered, no external power supply required 64mb/128mb/256mb/512mb/1gb/2gb g.w: 8.5kg n.w: 7.0kg pcs/box: 100pcs/ctn packing size: 48*34*28cm hcg international limited: china usb flash disk manufacturer, supplier, exporter wholesaler. our factory supply, export, wholesale, offer lanyard flash drive- lanyard usb disk from shenzhen, guangdong, china. (lanyard usb flash disk, data band, usb lanyard, lanyard data band, lanyard flash disk, lanyard usb drive disk, lanyard flash memory, lanyard flash drive..)