Parts on the system boardNote: The system board might look slightly different from the illustration.Figure 5. System board part locations1 Front-audio connector 2 Internal-speaker connector3 Memory fan connector 1 4 Microprocessor 2 memory slot 15 Microprocessor 2 memory slot 5 6 Microprocessor 2 memory slot 37 Microprocessor 2 memory slot 4 8 Microprocessor 2 memory slot 69 Microprocessor 2 memory slot 2 10 Microprocessor 1 memory slot 211 Microprocessor 1 memory slot 6 12 Microprocessor 1 memory slot 413 Microprocessor 1 memory slot 3 14 Microprocessor 1 memory slot 515 Microprocessor 1 memory slot 1 16 Thermal-sensor connector17 Cover presence switch connector (intrusion switchconnector)18 Microprocessor 119 Microprocessor fan connector 1 20 Blind connect assembly (BCA) 3 connector21 M.2 solid-state drive slot 1 22 M.2 solid-state drive slot 223 VROC header 24 Trusted cryptography module (TCM) connector25 4-pin power connector (for optical drive) 26 Four-digit-diagnostics display connector27 Optical-drive fan connector 1 28 Front-fan-assembly connector29 Optical-drive fan connector 2 30 6-pin power connector 1 (for graphics card)38 P720 Hardware Maintenance Manual
