Check the listing for details. Compaq, Ball Mouse PS/2 Connector N8RBP, Untested. Color: Black, Condition: Used, Made in China. Listed at 5.75 USD. The product is a Compaq Ball Mouse with a PS/2 connector, model N8RBP. This standard mouse features a sleek black color and is designed with ergonomic principles in mind. It also includes a scroll wheel and has two buttons for easy navigation. Made in China, this mouse is ideal for those looking for a reliable and functional input device for their computer setup. Untested. Please look at the pictures closely, as this is the item that you will receive.