Pasow USB 2.0 A Male to A Female Extension Cable High Speed 480 Mbps (50 Feet(15m)) This cable does not have an adapter and can be used in USB devices such as surveillance cameras, fax machines , printers , scanners , U disk , card reader ,mouse and keyboard ,touch screen,etc.The camera can be connected with this cable because the current is enough for this lenth.Can not use on DVR.The DVR can not recognize the chip of this cable. 15m / 50 feet cable length, Type A Male and Female connectors Elastic PVC jacket: flexible, not easy to break, durable It can provide up to 480 MBPS super fast data transfer rate True Plug and Play, Support Win98SE/2000/XP/Vista/Win7/8/10 . can not use on DVR.