" Intel Celeron B810 CPU 1.8 GHz, 2MB L2 Cache " 4GB DDR3 SO-DIMM, MAX 8GB " POSREADY 7 / Win 7 PRO " Available in 15" TFT LCD, 1024x768 and 17" TFT LCD, 1280x1024 " Available in Precision-Edge Projective Capacitive , Resistive, or Infrared " 2.5" SATA 320 GB HDD or SSD Kit (optional) " 1 x RJ-45 10/100/1000 Base-T Ethernet; 4 Serial COM Ports (3 x DB9; 1 x RJ-50, all w/ _5V/12V support); 1 x VGA 15-pin d-sub; 7 x USB 2.0 Type A ports; 1 x RJ-11 Cash Drawer port (controls 2 cash drawers); 1 x Battery Backup Port; 1 x Line Out