HP 621 Compaq 320, 321, 420, 421, 620, 621 Notebook PCs and HP 420, 620 Notebo - Page 148
RJ-45 (network), Universal Serial Bus
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RJ-45 (network) Pin Signal 1 Transmit + 2 Transmit - 3 Receive + 4 Unused 5 Unused 6 Receive - 7 Unused 8 Unused Universal Serial Bus Pin Signal 1 +5 VDC 2 Data - 3 Data + 4 Ground 138 Chapter 8 Connector pin assignments
![](/manual_guide/products/hewlettpackard-321-compaq-320-321-420-421-620-621-notebook-pcs-hp-420-620-notebook-pcs-maintenance-service-guide-4f5289e/148.png)
RJ-45 (network)
Pin
Signal
1
Transmit +
2
Transmit -
3
Receive +
4
Unused
5
Unused
6
Receive -
7
Unused
8
Unused
Universal Serial Bus
Pin
Signal
1
+5 VDC
2
Data -
3
Data +
4
Ground
138
Chapter 8
Connector pin assignments