Q&A Forum > > Reply To: When is it O.K., to use a CAT-6 Ethernet Patch Cable, where a CAT-5E, was ? Start a new discussion January 24, 2022 at 8:32 am #52088 TeamKomando:JohnParticipant @264458 Hello leftblank15, Whenever needed it is okay to substitute, CAT-6 can offer higher bandwidth if the run is shorter than 180 ft & your hardware is capable. You can tap or click here to go over all of the key differences.