Check the listing for details. 2 x USB WiFi Wireless Adapter Mini Network 300Mbps Windows MAC Linux 802.11n. Color: Black, Condition: New. Listed at 4.38 USD. Realtel RTL8188 USB WiFi Wireless Adapter Mini Network Dongle 300Mbps Windows MAC Linux 802.11n Features:- Super-small size compact design that fits into your computer's USB port with minimal protrusion making it ideal for use when traveling or in a crowded workspace- Provides an excellent solution for performing everyday activities such as transferring files, browsing the Internet, and downloading music.- Complies with wireless 802.11n standards- Data rate up to 450Mbps- Supports 64/128 bit WEP, WPA encryptionTransfer Method: Direct Sequence Spread Spectrum (DSSS) Frequency Band: 2.4~2.4835GHzEffective Working Distance: 100 meters farthest indoor and 150 meters farthest outdoor (varies due to the environment)Support System with Windows Vista / XP / 2000 / 7 / with MAC / LinuxDimensions: 0.71 in x 0.59 in x 0.24 in (18 mm x 15 mm x 6 mm)Net Weight: 0.07oz (2g)Package Weight: 2 G / 0.07 OuncesPackage Dimensions (L*W*H): 80*20*30 MM / 3.15*0.79*1.18 InchesPackage Including:1 x Wifi Network Adapter Please note that you may have to download the driver manually and install it for firs time use Driver Download Link: https://drive.google.com/open?id=0B0DYHppEJ9cHWHBZQmZEZW15NjA