SANOXY A/B RJ45 Ethernet Switch Box. With this 4 port RJ45 Network/Ethernet Sharing Switch Box you can switch between four RJ45 Ethernet devices with the push of a button. It is easy and convenient to use, just press the relative button to switch. No power required, no additional software needed. SANOXY RJ45 Network 4-way ABCD Sharing Switch Box. RJ45 Network 4-way ABCD Sharing Switch Box. Bi-Directional: Can be used as a 4×1 4 in, 1 out or 1×4 1 in, 4 out switch. Can be used with RJ45 network devices including 8 wire phone applications. Long Life: Switch more than 100,000 times. No power required. No software required. Plug and Play