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 form factor is identical to our previous RB850 and RB450 series, so you can even use the same enclosures.The device is powered by a quad core ARM CPU, has 1 GB of RAM 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.