The usb3sab3mbk 3m black usb 30 a to b cable allows you to connect your usb 30 type b devices such as your hard drive enclosures card readers docking stations and video capture devices up to 3 meters away from your computer the usb 30 cable features high quality shielded twisted pair stp construction which helps to prevent electro magnetic interference and ensures reliable data communication the 3m cable is backed by startechcoms lifetime warranty providing guaranteed quality and