This topic has been discussed extensively… 
Anyway, I’m using a DeLock 4K 60Hz 5m DisplayPort extension cable without issues.
For USB I’m using an active cable but it shouldn’t be needed if Your ports can deliver. It’s a Deltaco USB2 EX5 (5m).
I haven’t extended the power cable as I’m just using an extension cord but those have also been discussed somewhere on these forums.
EDIT: Here’s a thread with a link to a power cable extension:
https://community.openmr.ai/t/8k-5k-extension-cables/17898