The RB450G is a five port Gigabit ethernet router. Comparing to the RB450, the RB450G not only adds Gigabit speed capability, but also 256Mb of RAM, a faster CPU and a microSD card slot for file storage. The device is powered by a fast AR7161 680MHz Atheros CPU, and also includes a temperature sensor and voltage monitor. RB450G includes RouterOS (Level 5) the operating system, which will turn this powerful system into a highly sophisticated router, firewall or bandwidth manager.

Actually called a The miniROUTER (Mikrotik RouterBOARD 450) with 300MHz Atheros AR7130 CPU, 32MB RAM, 5 10/100 ethernet ports, 64MB NAND with RouterOS L5! This makes a great Small Office or Home Router/Firewall. Supports POE on ether1: 10 to 28vdc on unused pairs (no power over datalines), or 10-28vdc power jack support. Overall dimensions: 115mm x 90mm (4.53in x 3.54in)