This is a simple USB numeric keypad made by BUFFALO. It's ready to use as soon as you connect it. I bought it new and didn't use it much, so I think it's in relatively good condition, but please check the photos for details. Retail price: 2,035 yen Specifications: Interface: USB 2.0/1.1 Cable length: 0.8m Key pitch: 16mm Key input method: Membrane Hub ports: 2 ports Hub interface: USB 2.0 Hub port power supply: USB bus power Number of keys: 19 Power supply: USB bus power 5.0V ± 5% External dimensions: W80 x D120 x H16mm Weight: 93g Product Description: ▪️ Compact numeric keypad with a 16mm key pitch. It's a size that won't get in the way even when used with a netbook in a small space. ▪️ Numeric keypad with 2 USB hub ports It has two USB 2.0-compatible USB hub ports on the back, making it convenient to connect USB devices that use bus power. ▪️ No drivers needed! Easy connection via USB Simply plug it into a USB port. No driver installation is required, and you can use it without any troublesome settings.