... *Queues per Port (Tx = Transmit, Rx = Receive),**WS-X6748-SFPSmall Form-factor Pluggable (SFP)48 port; 1000BASE-SX, LX/LH, -ZX, -T ... /frameTx-1p3q8TRx-1q8T (2q8T when using dCEF)WS-X6724-SFPSmall Form-factor Pluggable (SFP)24-port; 1000BASE-SX, LX/LH, -ZX, -T ...