The RB450Gx4 is an Ethernet router with five Gigabit Ethernet ports, a serial port, 512 MB NAND memory and a microSD card slot. In addition, it supports full 10 V - 57 V input by two power jacks or PoE (802.3af/ at or passive PoE) and can provide PoE output for Ethernet port #5. It is powered by MikroTik RouterOS. It comes without an enclosure, you are free to use it in your own. The device is powered by a quad core ARM CPU, and supports hardware IPsec encryption. The device is powered by RouterOS - the operating system, which will turn this powerful system into a highly sophisticated router, firewall or bandwidth manager.