NEC SP B-Series - Manual (Page 117)

B-16 Connector Pin Assignments
PCI Expansion Slot Pin Assignments
Pin Signal Pin Signal Pin Signal Pin Signal
A29 AD20 B29 AD21 A60 REQ64C# B60 ACK64C#
A30 Ground B30 AD19 A61 +5V B61 +5V
A31 AD18 B31 +3.3V A62 +5V B62 +5V
Universal Serial Bus (USB) Connectors
The following table lists the pin assignments and signal names for the USB
connectors.
USB Connectors
Pin Signal Name
1 Power
2 USBP0# (USBP1#)
3 USBP0 (USBP1)
4 Ground