DB9 Male to Female Cable for APC UPS 940 0024c SUA-1000ICH SUA-1500ICH Communication Cable Serial Kable

I had two APC AP9617 cards that had an IP address set which I did not know. I tried to make my own cable from spares I had laying around and nothing I tried worked. As soon as I connected this cable I was able to use Putty and reset the cards to DHCP. The UPS is a Smart-UPS 750. Should have just bought this from the start.