Is your old laptop missing the old ports? Our mini replicator combines a USB serial adapter, USB parallel printer adapter, and 2-port USB hub into one compact accessory. It draws power from the USB port. There is no need to carry a power adapter or to be near a power outlet to use the replicator. The replicator is an ideal accessory for the new ultra-thin laptops, Tablet PCs, and Pocket PCs with USB host capability