Hi,

Yes you are correct.

Cisco Nexus 56128P Switch: The Cisco Nexus 56128P is a 2RU switch (figure 3) that supports 2.56 Tbps of bandwidth across 48 fixed 1 Gigabit and 10 Gigabit Ethernet SFP+ ports, and four 40-Gbps QSFP+ ports (Figure 3). The Cisco Nexus 56128P offers two expansion slots to support 24 ports of 10 Gigabit Ethernet and FCoE or 8/4/2-Gbps Fibre Channel and two ports of 40 Gigabit Ethernet using QSFP optics.

The Cisco Nexus 56128P (figure 4) also offers two slots for a Generic Expansion Modules (GEM). The GEM for the Cisco Nexus 56128P provides 24 ports 10G Ethernet/FCoE or 2/4/8G Fibre Channel and 2 ports 40 Gigabit QSFP+ Ethernet/FCoE ports. The expansion module supports native 40 Gigabit Ethernet on the QSFP+ ports. The expansion module is supported on the Cisco Nexus 56128P chassis only and can be populated in either of the two expansion slots.

HTH

Inayath.