AP/CPE RouterOS L4 Firewall/Routing; PowerPC E300 266/333MHz CPU; QUICC Engine 175MHz Coprocessor; 64MB DDR RAM; Onboard NAND storage; Three 10/100 ethernet ports MDI/X; Three miniPCI Type IIIA/IIIB slots; Power: 9-28V DC; Overvoltage protection; PoE: 12-28V DC (no power over datalines); 150mm x 105mm (5.9in x 4.13in)