This forum is focused on IDPA so I don't think you will find a detailed question about a UPS cable here. I suggest searching a more appropriate forum or for the documentation. Here is a place to start and it includes some other references as well. Dell UPS : Uninterrupted Power System - Information and Troubleshooting Issues: [URL]   I hope this helps.   Questions/comments welcome. If you found this useful please give KUDOS to help others find the information also. thanks  
Does anyone know the cable pin-outs for the serial DB-9 (Male - Female) cable?  I misplaced the one for my Dell 1000W unit.  I know it uses pins 2 and 3 for RX and TX and 5 for ground.  Question is does the cable cross these pins on the other side (ie: null modem)?   thx
Dell UPS 1000W cable