I spent three hours at any disconnect / reconnect, but this time by grouping all the proper cables ... now I have much less ashamed of what I camouflaged somehow behind the TV stand I then :) attacked PC :)
I was afraid that the straps are too small after reading some comments, but they are not very good and I have never been embarrassed by their size, whatever the type of cable that I tied (Power supply / speaker / RJ45 / HDMI / USB ...) and as said in the comments at worst can scratch 2 straps together to increase the length.