The Smartline extender is optimised for all signals such as DVI and USB. The transmission distance of 150m is completely lossless. The transparent USB 2.0 interface supports keyboard, mouse, sound modules, printers, smartcard readers, serial adapters and more. Memory stick and hard disk support is available with the USB memory option which may unlocked after deployment by purchasing a license code. The USB memory option can be enabled and disabled for security purposes.