TP-Link TL-WN821N 300Mbps Wireless N USB Adapter (Black/White) @648

Excellent N speed brings best experience for HD video streaming or internet calls, MIMO technology with stronger signal penetration strength, wider wireless coverage, providing better performance and stability and easy wireless security encryption at a push of the WPS button
Supports Windows XP / Vista / 7 / 8 / 8.1, supports infrastructure and Ad-Hoc modes, fully compatible with all IEEE 802.11b/g/n products and supports Sony PSP X-link for online gaming for Windows XP
Bundled CD provides easy and hassle-free installation and configuration and easily establish a highly secured link at a push of WPS button
http://www.amazon.in/TP-Link-TL-WN821N-300Mbps-Wireless-Adapter/dp/B002T4D3M2?ie=UTF8&ref_=gbps_img_s-4_7867_6bf4fdff&smid=A14UQ4H17XUX90