The ThinkPad Essential Port Replicator offers one-step, passthrough connection to the devices you use every day. Ideal for notebook users who need access to a network, monitor, and multiple USB-attach peripherals. Standard device and video ports - 4 USB 2.0 ports, 1 PS/2 port for keyboard or mouse, and VGA for monitor. Communication ports - Gigabit Ethernet (RJ-45) and modem (RJ-11).