Apollo23 3ft USB 2.0 Male to Male M/M Spring Spiral Retractable Cable This is a standard male to male USB 2.0 cable with A-type connections on both ends. This is typically the style of connection found on the backs of PCs. USB A male connector on both ends Backward compatible with USB 1.0 and 1.1 Cable can stretch maximum length up to about 90cm This is typically the style of connection found on the backs of PCs. USB 2.0 cables are backwards compatible as they can carry USB 1.0 or 1.1 signal. USB cables are used to connect devices such as digital cameras, digital video cameras, scanners, printers, web cams, mice, keyboards, joysticks, network connections, etc.