SIIG Wireless Multimedia Mini Keyboard and Mouse (JK-WR0712-S1) 2.4GHz RF wireless connection (USB Nano receiver included) Supports Windows XP/Vista/7/Server 2003/2008 Down-curved contemporary slim line design with glossy and matt black paint combination enriched the elegant appearance Compact footprint with 87-key layout for space saving, 12 combination hot keys add quick accessibility to internet, e-mail and media control functions Low profile chocolate key provides comfort touch with tactile feedback Low profile 3-button optical scroll mouse provides smooth scrolling and precision tracking. Built-in Nano receiver storage compartment for ease of carry Keyboard built-in wireless link and low battery power status indication LED, each keyboarded or mouse unit is powered by 1x AAA battery