Compatibility: Compatible with Windows XP, Windows 7, Windows 8, Windows 10, Mac and Vista systems. Works with notebook, Chromebook, laptop, computer that is equipped with USB ports. Product Description: ? Whisper-quiet keys to ensure comfortable and smooth typing experience. ? Full-size 23 keys numeric keyboard with home keys, tab keys, e-mail key and the numeric key are comfortable, convenient and built to last. ? Ergonomic design brings you a pleasing typing experience. ? The bottom is equipped with soft silicone pad, which is anti-skid effectively. ? The numeric key is equipped with multi-function indicator light to indicate its states accurately. ? Concise design is very beautiful, portable and compact, easy to be held in the backpack. ? It is suitable for the laptop without a numeric key area, especially for those who need the frequent use of digital statistic function in work like financial accounting. Specifications Interface(s): USB USB Cable Length: 1.5 Meters (4.92 feet) Numeric Keyboard Material: ABS Numeric Keyboard Dimensions: 5.78" x 3.54" x 0.75" (14.7 x 9 x 1.8cm) Numeric Keyboard Weight: 4.46ounces (127g) Package Content: 1 * Wired Numeric Keyboard 1 * User Manual 1 * Packaging Box