So you are routing the power supply from outside your house, to inside?
Is the camera outside?
I just ran a USB 3.0 IO Gear 9 ft extender cable to the camera - it does power up, but fails to connect wirelessly. It's not getting enough juice. When i remove the extender, the usb cable and 2.1 Amp Samsung fast charger work. Its pulling .8x watts when connected wirelessly. (I also have an micro sd card in there, so that's pulling some power). Pulling the card out didn't help. I don't think it is going to work with a 9FT cable.
You might have better luck with a power cord, preferably something thick enough...
after reading this post, seems cable length and thickness should be consider. 960L is rated 5V 2Amp.
I also need to extend the power cable, will probably try first with additional 1-meter.
I just had an aha moment ...
I have 2 960ls, the NEWER one in my kitchen - it is about a 3.5ft cord, DLINK branded power supply, thin cable, both wires can be felt.
The older one - as you mention about cable length and thickness, I pulled it out, and it's an 8.x ft cable, the wires are inside a single round casing.
The power brick is an Asian Power Device brand, and it is rated as you mentioned - 5V 2Amp. I am sure this is the correct power supply - as I remember having it wrapped around into another outlet - and it had the length.
I never realized I was short changed with the newer version.
I know my Western Digital external drives come with Asian Power Device adapters - but I don't remember any with the odd thick end to plug in.
Also - the oringinal DCS-2630L I bought has the same Asian Power Device adapter and power rating, and it is also an 8.xft type cable.
I'm in the USA.