The iConcepts Mobile Mini Numeric Keypad is perfect for the mobile executive on the go. The built in 2 port USB Hub allows the easy expansion of additional USB devices. Great for users who work with numbers, simply plug it into the USB port of your notebook instead of switching to the embedded keypad in your notebook keyboard. The integrated 2 port USB hub offers increased expansion capability for additional USB devices. Its sleek, lightweight and durable design is easy to tote around wherever you go. This product has been tested by industry professionals to ensure that this product is of the highest quality and is long lasting.