I use BreakFree CLP for all my cables, disconnect and spray with a straw from the top.
I used to use BreakFree on firearms until I realized that the reason they said to shake before use was that the teflon in it would separate from the liquid. If it does that in the bottle it'll separate on the parts it's lubing. Not good.
I now use good old Mobile 1 for cables and what have you. I even use it on guns, not that I own any guns mind you.