Sun Microsystems Netra 440, Service Manual

Page: 143 / 166

Appendix B Connector Pinouts 125
USB Ports
Four Universal Serial Bus (USB) ports are located on the motherboard in a double-
stacked layout. The ports can be accessed from the back panel.
FIGURE B-2
USB Connector Pin Numbering
TABLE B-2
USB Ports Pin Numbering
Pin Signal Description Pin Signal Description
A1 +5 V (fused) B1 +5 V (fused)
A2 USB0/1- B2 USB2/3-
A3 USB0/1+ B3 USB2/3+
A4 Ground B4 Ground
1
2 3
4
1
2 3 4
A
B
1
2
3
4
1
2 3 4
A
B
USB2
USB0
USB1
USB3