I have a 2811 router with a PWR-2811-DC power supply in it. I have a PWR-2811-AC power supply that I would like to install in place of the DC input supply, but there is a second internal electrical connector on the DC supply that is absent from the AC supply. Can I just leave this cable disconnected (4 pos cons both ends with one Red and one White wire between) with the AC supply installed?

I think you've misunderstood the question. I understand the difference between AC and DC current and was not asking if I could connect a DC powered piece of equipment to an AC source. I am asking if I can switch the power supply in my 2811 Router from a PWR-2811-DC to a PWR-2811-AC. I think you've misunderstood the question. I understand the difference between AC and DC current and was not asking if I could connect a DC powered piece of equipment to an AC source. I am asking if I can switch the power supply in my 2811 Router from a PWR-2811-DC to a PWR-2811-AC.

Ahh! I didn?t realize this is and amateur (and immature) site. You seem to have a little knowledge and fluff it up with anecdotal B.S. to make it seem like you know what you?re talking about. You do this site a disservice. You DO NOT understand the question, so don't bother answering again. If you're the only one answering questions on this site then I will go elsewhere. Ahh! I didn?t realize this is and amateur (and immature) site. You seem to have a little knowledge and fluff it up with anecdotal B.S. to make it seem like you know what you?re talking about. You do this site a disservice. You DO NOT understand the question, so don't bother answering again. If you're the only one answering questions on this site then I will go elsewhere.