RELPER Mini USB 300Mbps Wifi Wireless Lan Network Internet Adapter 802.11n/g/b IEEE 802.11n, IEEE 802.11g, IEEE 80211b standard USB 2.0 interface.Up to 300Mbps Wireless Speed. This adapter provides a fast data transmission and the size of it as it fits into your Laptop. It does not protrude out too far and it helps to keep it from being damaged from catching onto something while you carry the computer 2x2 MIMO technology improves effective throughput and range over existing 802.11 b/g products LED Light Status System: Windows XP /Vista /Win7 /Mac10.8 /Linux.System Requrements:Available USB 2.0 Port. Windows 7 /Vista /XP / 2000 /Linux 2.4 or later.