This Lenovo 40A10090US ThinkPad Pro Dock is a convenient accessory for your laptop. It allows you to connect various devices to your laptop, including audio out, DisplayPort, DVI, Ethernet (RJ-45), USB 3.0, and USB 2.0 ports. The dock is compatible with Lenovo ThinkPad laptops and has a 90W AC power source. With this laptop lap desk, you can easily expand the capabilities of your ThinkPad without worrying about the condition of the item. It has a sleek black color and is designed for easy use. This docking station is perfect for anyone who needs to connect multiple devices to their laptop or wants to increase the functionality of their ThinkPad.