Cisco C3KX-NM-10GT. Ethernet interface type: 10 Gigabit Ethernet, Gigabit Ethernet, Ethernet LAN data rates: 1000,10000 Mbit/s, Networking standards: IEEE 802.3ab,IEEE 802.3an. Mean time between failures (MTBF): 1411719 h

The Cisco Catalyst 3750-X Series and 3560-X Series Switches support four optional network modules for uplink ports. The default switch configuration doesn’t include the uplink module; at the time of switch purchase the customer has the flexibility to choose from the network modules available.