Please note, there are two separate versions of 8 wire 4 circuit power used on AO2 panels.
1. Version 1 or "D" series power. The part number will read Axxxx.xxxx.D. This is power offered prior to 1992. It is 8 wire 4 circuit. The way to tell the difference, this power will have a black jumper cable that detaches from the power pack on both ends and is removeable from the pack.
2. Version 2 or "E" series power. The part number will read Axxxx.xxxxE. The is power offered after early 1992. It is 8 wire 4 circuit. The black jumpers on the end of the power pack are attached to the pack using rivets and have a small "S" bend on each end.
This Product may contain a chemical known to the State of California to cause cancer and/or birth defects or other reproductive harm. For more info go to www.P65Warnings.ca.gov