said by flwpwr :Thanks. I think i found it. I found a picture on Ebay that showed the label from the p.s.
The SMC box should list the DC power requirements, in volts and amperage, find one that matches that and fits in the hole and that's it, there is not ONE single brand they buy whatever is cheaper at the time like everyone else. Some have the power pack at the plug others in the middle of the line. Some may have a replacement pack Comcast bought from a third party.