Tiny, and once connected, it works ... I always have a Wifi key in my computer bag, to troubleshoot a wireless connection, or even replace a PLC, or even an entire network (cable, router, Ethernet card) defective. And 150 Mbit, it is theoretically faster than 100Mbit the majority of Ethernet routers, and all more than enough ways to surf the Internet. Furthermore, no wiring necessary: it is perfect, and considering the price I can even allow me to offer my clients ...