The RB400L is our low cost series. The RB433L has three miniPCI slots, three Gigabit Ethernet ports and one USB port for storage or a 3G modem. Use this device in an outdoor case for a sector AP installation, or for a wireless backhaul, Gigabit ports will let you utilize the full potential of 802.11n wireless MIMO. It’s powered by an Atheros 680MHz CPU and has 128MB of RAM and has a Level5 RouterOS license. Differences between RB433GL and RB433AH can be seen in the file "RB411L differences" in the left hand menu.DetailsProduct code RB433GLCurrent Monitor NoCPU 680MHzCPU speed 680MHzRAM 128MBArchitecture AR7161LAN ports 3Gigabit yes, all 3MiniPCI 3USB 1Power Jack Yes802.3af support NoPoE 8-28V DC on Ether1Voltage Monitor YesCPU temperature monitor NoPCB temperature monitor NoDimensions 105 mm x 154 mm,Operating System RouterOSTemperature range -30C to +60CRouterOS License Level5