Introduction 7Reference number Component Function5 Scroll lock LED6 Cap lock LED7 Number lock LED8 Touchpad9 Left pick button10 Middle pick button11 Right pick button12 Scroll bar13 USB pass thru Pass thru to the rear USBport (callout 1 in thefollowing figure)Rear componentsReference number Component Function1 USB pass thru Connects to a KVMswitch virtual media port2 USB Keyboard/Mouseconnector3 PS2 Keyboard connector4 PS2 Mouse connector5 VGA input connector6 Power connection7 Serial firmware port Enables user to updateTFT7600 firmware