Priced at just over 200 bucks, meet one of the smaller B550 Chipset based motherboards we review, the Mini-ITX based B550 Phantom Gaming-ITX/ax review, at 17x17cm AROCK loaded this B550 motherboard with some good features including dual M2 slots, 2.5 GigE Ethernet, AX WIFI and a pleasantly devised VRM. Well, simply put it's nearly a huge motherboard at a mini size.