This is something I am contemplating at work. We have had 90 plus new cable runs and points installed during lockdown as our cabling infrastructure was way over 10 years old and in horrific condition. These are all Cat 6 runs of various lengths, some pushing within 10 metres of the Cat 5e 100m limit. This all goes back to Cat 6 patch panels in the main cab. I would like to use the old Cat 5e patch panel leads (all less than 3 years old) to the switches though as there are so many of them and Cat 5e is so much slimmer and bends really easily for cable management. I can't imagine doing it with Cat 6 cables, the thought scares me. Also, the end users all have Cat 5e patch leads. What should I do?