TP-Link TL-WN823N 300Mbps Mini Wireless N USB Adapter (Black) at amazon rs.599
http://www.amazon.in/dp/B0088TKTY2/ref=gbmi_img_mob_s-1_0807_860c317a?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=15AZK2Y5XQKH05P1P10A