Universal Programmable Logic Controller (PLC) CPU unit - Mitsubishi Electric (MELSEC-Q Series (QnU)) - 500Ksteps / 2000KBytes (Program) memory capacity - connection capacity 4096 x I/O points - with USB connector + RJ45 port (10/100Mbit Ethernet) - with Ethernet communication capability - Supply voltage 5Vdc (from dedicated Q-series P.S.U.) - Backplane / rack mounting