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i had this idea of individually sleeving my cables, but then i found this when i cut off the existing heatshrink.
(lemmy.world)
The main idea i had was to individually sleeve these and potentially remove the split part as i don't like the idea of buying extensions and stuff even more cable inside my case.
On the other hand i would be ok with removing the combined sleeve and 3d print some combs to make the cables look better, especially since the mobo cable has a huge piece of heatshrink making it nearly impossible to look good.
But i have no clue what that little component is and if it only exists for the split that is in the cable.
Yeah, that's about 95% a filter cap. Hoghly likely you don't need one if you're gonna make your own cables, with short runs.