USB Connector Pinouts
Two Universal Serial Bus (USB) ports are located on the motherboard in a
double-stacked layout and can be accessed from the back panel. Two additional USB
ports are located on the front panel.
FIGURE:
TABLE:
Pin
A1
A2
A3
A4
Gigabit Ethernet Connector Pinouts
Four RJ-45 Gigabit Ethernet connectors (NET0, NET1, NET2, NET3) are located on
the system motherboard and can be accessed from the back panel. The Ethernet
interfaces operate at 10 Mbit/sec, 100 Mbit/sec, and 1000 Mbit/sec.
170
SPARC Enterprise T5440 Server Service Manual • July 2009
USB Connector Diagram
4
2
3
1
B
2
3
4
1
A
USB Connector Signals
Signal Description
+5 V (fused)
USB0/1-
USB0/1+
Ground
Pin
Signal Description
B1
+5 V (fused)
B2
USB2/3-
B3
USB2/3+
B4
Ground