B System board designators
This appendix describes the system board designators for this computer.
Designator Silk screen Component
MTG1-MTG10 N/A Mounting holes
E15 E15 Crisis recovery header/jumper
E49 E49 Clear password header/jumper
J9 J9 RJ/USB LAN/DUAL USB
J10 J10 QUAD USB Quad rear USB
J20 J20 SLOT5 PCI PCI slot
J21 J21 SLOT6 PCI PCI slot
J22 J22 SLOT7 PCI PCI slot
J31 J31 SLOT1 PCIe x1 PCIe x1 slot
J32 J32 SLOT4 PCIe x16(4) PCIe x16(4) slot
J33 J33 SLOT3 PCIe x4(1) PCIe x4(1)
J41 J41 SLOT2 PCIe2 x16 75W PCIe2 x16 slot
J64 DP Display port connector
J65 DVI DVI-I connector
J68 J68 PS2 KBD_MSE Stacked keyboard/mouse connector
J83 J83 AUD Triple stacked audio jacks
J86 J86 Slot2 PCIe x16 retention clip
SW50 SW50 CMOS Clear CMOS switch/push button
P1 P1 PWR Power supply connector (18-pin)
P3 P3 PWR CPU CPU power connector (4-pin)
P5 P5 PB/LED Power button/HDD LED/Power LED switch/
Side access panel sensor/Temperature header
P6 P6 Auxiliary graphics power connector
P8 P8 CHFAN Rear system fan
P9 P9 Front fan header
P24 P24 FRONT USB Front panel USB header
P25 P25 INTERNAL USB2 Dual internal USB header
P26 P26 INTERNAL USB3 Single internal USB header
ENWW 161