HP rp5700 - Manual (Page 16)

Serial Ports Serial Ports Serial Ports Serial Ports All serial (COM) ports can be custom configured in either standard mode or powered mode. By
repositioning the jumpers (provided) on the system board and on the COM port PCI add-in card (some
models), each COM power can achieve power on pin 1 or pin 9. The illustration and table below
indicate the COM port assignments and voltage supported for each COM port.
COM port assignment COM port assignment COM port assignment COM port assignment Description Description Description Description Standard Mode Standard Mode Standard Mode Standard Mode +5V +5V +5V +5V +9V +9V +9V +9V +12V +12V +12V +12V
1 COM1 (yellow) Yes Yes Yes Yes
2 COM2 Yes Yes No Yes
3 COM3 (some models) Yes Yes No Yes
4 COM4 (some models) Yes Yes No Yes
The following illustrations show how to position the jumpers on the system board and on the COM port
PCI add-in card (available on some models) to achieve power on pin 1 or pin 9.
P16 and P127 are located on the system board behind the COM1 port.
QuickSpecs
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Technical Specifications - Communications
DA - 12758 North America — Version 26 — March 22, 2011 Page 16