Was cheap enough I just got around to it. But the cable hole is absolutely adjustable. Available in three different sizes, all very small and not big enough for a computer. I ended up just pulling out the entire center section and just using the black bushing ring. It's also very disappointing that I drilled the 2" holes as required and they all don't fit properly. You really need a 1 15/16" or 1 7/8" hole. Not exactly standard sizes for a typical homeowner's hole saw set. But it's still a bit late as I've already drilled a 2 inch hole.
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