Appendix C Powered Serial Ports - HP Rp5700 - Point of Sale System Hardware Reference Manual

C Powered Serial Ports
Two powered serial ports, COM 1 and COM 2, are standard on the computer. Some models have a
powered serial port expansion card installed that supplies two additional powered serial ports, COM 3
and COM 4.
Figure C-1
Item Description
1 COM 1 (yellow)
2 COM 2 (teal)
3 COM 3 (teal) (some models)
4 COM 4 (teal) (some models)
ENWW
Powered Serial Ports
Supports
+5V +9V +12V
Yes Yes Yes
Yes No Yes
Yes No Yes
Yes No Yes
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