I have 3 switches doing fine. (2x 2748 and 1x 2848)
On 2 of them however, the RJ45 combo ports are not working. 1x 2748 and the 2848. (the 2nd 2748 ports work perfectly)
I have no SPF cables.
The RJ45 ports in the combo area of the 2748 do not work at all.
The same ports on the 2848 work after about 20 seconds.
All the meanwhile, on both switches, the leds are green and flashing as soon as a cable is plugged in.
All other RJ45 ports on the switches are working fine.
