About this item PLUG & PLAY: Simply plug the USB keypad into a USB port and begin crunching numbers instantly. No drivers or extra required. Compatible with any computer with a USB Port (Mac OS X v10 6 or later Windows 7/8/10/XP/Vista). COMFORTABLE TO USE: With 18 full-size keys (enhanced with scissor switches and quiet keycaps) the number keypad for laptop is easy and comfortable to use. It is the PERFECT ADD ON accessory for those who use laptops. ERGONO DESIGN: Designed to fit the average hand and prevent wrist strain with a tilted slope, this 10 digit keypad is the perfect gift for bookkeepers working on Excel, teachers entering grades, or office workers for data entry. SLIM & COMPACT: The ultra-slim 10 key number keyboard is sleek and compact. It is travel friendly with a convenient cable bracket that allows you to wrap up the 5ft cable easily for storage in your purse, bag, or satchel. BUY WITH CONFIDENCE: At Macally, we aim to provide excellence in both our products and service. Therefore we back our USB number pad with up to 2 years of warranty, LIFETIME SUPPORT, and hle free returns to ensure that you are satisfied with purchase.