My questio is, can SFP+ slots support both SFP and SFP+ modules and should operate at the same time, in switch like WS-C3850-48P-L or  WS-C3850-24P-L ?   we will be able to put one regular SFP in SFP+ port 1 and one SFP+ like (SFP-10G-LR) transceiver...