[Nut-upsuser] HP/Compaq T700H UPS cable pinout

Mathew McBride matt at mcbridematt.dhs.org
Tue Jan 13 02:40:58 UTC 2009

I managed to obtain the original cable for this UPS, and it turns out, 
according to some poking with a multimeter, that it is a simple straight 
through. I managed to connect the UPS and setup NUT ok.

One thing I would like though: The HP software can display the 
output/load wattage. Is it possible to somehow add this to the variables 
On 22/12/08 Mathew McBride wrote:
> I'm not sure its a PW5115, as the PW5115 has a USB port. I've been using
> a Windows box to test with HP's software and PuTTY as my Linux server
> doesn't have a serial port yet.. but with the PW5115 cable it doesn't
> work either.
> I did fool around with a volt meter on the UPS serial port and found the
> following in case it narrows things down:
> Pin 5: Ground
> Pin 6: 12V
> Pin 2: -8V
> This is when everything is nominal, AC power on, battery OK.

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