TP-Link TL-WN722N 150Mbps Wireless USB Adapter (Black/White) at amazon rs.655
http://www.amazon.in/dp/B002SZEOLG/ref=gbmi_img_mob_s-1_0807_d47d13d9?m=A14UQ4H17XUX90&pf_rd_p=900470807&pf_rd_s=slot-1&pf_rd_t=35801&pf_rd_i=1002&pf_rd_m=A1VBAL9TL5WCBF&pf_rd_r=091XA5MEC2ECPKHHDSKA