The QSFP+ GEM (N55-M4Q) is a generic expansion module (GEM) that provides 16x10 Gigabit Ethernet SFP+ in a 4 x QSFP+ form factor. This module does not support native 40 Gigabit Ethernet on the QSFP+ port. This module is supported on all Cisco Nexus 5500 chassis (Cisco Nexus 5548P, Cisco Nexus 5548UP, Cisco Nexus 5596UP, and Cisco Nexus 5596T). This module is suitable for any expansion slot on the Cisco Nexus 5500 Series and you can populate all the expansion slots on the Cisco Nexus 5596 chassis with N55-M4Qs. There is no additional configuration needed to specify the operation mode of the QSFP+ ports because all the ports only operate in 4 x10 Gigabit Ethernet mode.