Designator Silkscreen Component
P11 AUX Auxiliary audio connector
P19 SPDIF OUT SPDIF OUT header
P20 PRIMARY IDE Primary IDE connector
P23 FRNT AUD Front panel audio header
P24 FRNTUSB2–3 Front panel USB header
P25 IUSB1 Internal USB header
P26 IUSB0 Internal USB header (Requires AMO
kit with USB cable)
P54 None Serial port connector
P60-63, P66-67 SATA0-SATA5 SATA Connectors
P70 CPUFAN0 CPU0 fan header
P71 CPUFAN1 CPU1 fan header
P80-87 SAS/SATA0–SAS/SATA7 SAS Connectors
P91 VOLTAGE REGULATOR FAN (LIQUID
COOLING UNIT)
Voltage regulator fan connector
P92 PCI FAN PCI fan header
P93 MEMORY FAN Memory fan header
P94 12V FAN 12-V fan header
P95 12V FAN 12-V fan header
SW50 CMOS Clear CMOS switch/push button
U15 ROM ROM socket
XMM1 DIMM3b Memory slot
XMM2 DIMM3a Memory slot
XMM3 DIMM1b Memory slot
XMM4 DIMM1a Memory slot
XMM5 DIMM4b Memory slot
XMM6 DIMM4a Memory slot
XMM7 DIMM2b Memory slot
XMM8 DIMM2a Memory slot
XU1 CPU0 Primary processor socket
XU2 CPU1 Secondary processor socket
* With the jumper on pins 1 and 2, the PCI-X bus speed is 100 MHz, regardless of the card configuration
in slots 6 and 7. With the jumper on pins 2 and 3 (default), the following PCI-X bus speed/card
configuration applies:
184 Appendix D Appendix D— System board designators ENWW
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