APC Back-UPS RJ45 to USB data cable

stephan288

n00b
Joined
Sep 29, 2011
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2
Hello all!

Maybe someone handy in electronics and with some knowledge about UPS from APC cou take a look at this older thread and give me an opinion or maybe a solution:

http://hardforum.com/showthread.php?p=1037818337#post1037818337

The last post in that thread is mine, but it´s kind of an old thread so i am not sure if anyone ever will reply there. That´s why i am starting this new one to get a quick answer. I point out the problem again to let you know what i want to try (i just copy/paste to make it a little faster):

I got an APC Back-UPS RS 900 from a friend that he wanted to throw away. I replaced the 2 batteries and it works well, i guess. I beeps constantly when i take off the power, which means that it´s about to shutdown imediately, but actually it lasts for more than 10 minutes.
As i don´t have the original data cable i was searching in google and i got to this thread.
It will be a little dificult for me to get a RJ45 10p10c plug here since i live in a remote place, but i am handy with soldering equipmente. So my question is:

If i desolder the RJ45 jack from the UPS PCB board and solder the USB cable directly to the correspondant solder points on the UPS board, will it still work? As i understood the 10 pin connector uses actually just 4 pins, so i have to find just those 4 contact points on the board.

Any hint would be greatful apreciated, since i don´t want to do anything stupid and damage this UPS. But i like to install the monitoring software to see the battery condition.

I also have a second of those UPS which got struck by lightning so the board is fried, and removing the RJ45 connector is a piece of cake, i already took it off.

Thanks for your help with this one.
 
I have a few extra cables from APC units. You can have one for the price of shipping. PM me your address if you're interested.

If shipping is too expensive, then yah, what you plan on doing should work, judging by one of the links from the other thread: http://pinouts.ru/DevicesCables/apc_usb_cable_pinout.shtml -- looks like a passthrough cable to me; looks easy enough.
 
It's too bad monoprice doesn't carry these things.

I used to have a bunch of these... maybe I'll sell them (if I can find them; I have a couple in my drawer, but I had like dozens before).
 
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