Simatic rack pc il 43 interfaces: 1x gbit lan (rj45); 1x serial (com1); 1x parallel (lpt); 4x usb 2x usb front side 2xps/2; 7 slots (4x pci long, 1x pcie x 16 2x pcie x 1); temperature and fan monitoring; watchdog; card retainer; power unit 110/230v;