ASUS' RT-AC5300 Wireless-AC5300 Tri-Band Gigabit Router is the second AC5300 router I've tested and ASUS' second based on Broadcom's new 4x4 radio (the RT-AC88U / RT-AC3100 was the first). The AC5300 has two 5 GHz radios vs. the AC88U's two and uses Broadcom's XStream technology .