Asus USB-N53 N600 Dual-Band Wi-Fi USB Stick (802.11 a / b / g / n, USB 2.0, Windows Mac & Linux compatible, 2x antenna) (Accessories)
BUT! the 2.4 Ghz Mode often the lagging. Need the stick but for 5 GHz WLAN, this works but not under Win8 / 8.1. Unfortunately, ASUS improves again, not after and does not respond to support queries ... I'm also tired 1000 chipset drivers to try ther