This is a black male to male usb 2.0 cable with one a-type connection and one b-type. These are more commonly known as usb printer/scanner/device cables. Type a is typically the style of connection found on the backs of pcs. Type b is the smaller square connector typically found on devices such as: Printers, scanners, external hard drives and usb hubs. Usb 2.0 cables are backwards compatible as they can carry a usb 1.0 and 1.1 signal. Connect a keyboard, mouse, scanner, hard drive, printer, server, camera & more, to a laptop, computer (mac/pc) or other usb-enabled device. Corrosion-resistant gold-plated connectors & foil/braid shielding, give this resilient cable long-term use without noise or signal loss.