Thinkpads Forum

I have a question about my T43 power adapter. As the title says, this adapter is a 73P4503 combo adapter. It has a normal AC input but it also has a separate 4 pin DC input plug. The cable for this plug is part number 73P4510. The cheapest i can find this cable is $30 on ebay, or $60 on the IBM website.

The plug connector for the DC input is a 4 pin, circular type connector. It almost looks like an XLR connector but it is smaller (only 9.5mm diameter). I know that I can make a DC power cable much cheaper than what i can find online, but i dont know a pinout for the connector. I assume that IBM is keeping this information secret so they can make money. does anyone have a cable like this or know the pinout for this cable? I can post a pic of the connector if anyone wants. thanks.

Welcome to thinkpads.com!

I thought I posted this information awhile back but I can't seem to find it. At any rate, I think that is what you are looking for:

http://www.kawakami-ca.com/images/ibm_dc_cable.jpg

Note that is is for a slightly different version of the AC/DC combo adapter.(22P9003).

yes thats exactly it! thanks for your fast reply, now i have something productive to do today

thanks a bunch,
Tom