X20 CPU, ATOM 0.6 GHz, 256 MB DDR2 RAM, 1 MB SRAM, removable program memory: CompactFlash, 1 insert slot for X20 interface modules, 2 USB ports, 1 RS232 interface, 1 Ethernet port 10/100/1000 Base-T, 1 POWERLINK interface, incl. power supply module, 1x X20TB12 terminal block, slot cover and X20 locking plate (right) X20AC0SR1 included, order program memory separately.