It was usually a rats nest of cables, which I was really tired of, so I came up with this solution
Step 1: Some simple woodworking
I then drilled and counter sunk 1/8" holes in the side piece 1a.
Then using 1 1/2 all purpose screws I put 1a & 1b back together.
I then cut 6 1/4" holes for the cables and cut dado that matched my side board (2) and top board (3)
Once that was done I glued and nailed 2 & 3 to 1b, be sure to take off part 1a. I didn't and had to cut it off.
I added corner blocks 4a and 4b to help support the joint between parts 2 and 3.
Once the glue has set you can paint it what ever color you want. I had some blue laying around so....