XENPAK is a transceiver that provides 10-Gigabit Ethernet connectivity on the Cisco Catalyst WS-C3750G-16TD switches. XENPAK modules are only supported on the Cisco Catalyst 3750G-16TD switches.
These are the XENPAKs that are supported on the Cisco Catalyst WS-3750 switches:
These XENPAK transceivers are also available:
The new Cisco Catalyst 3750-24PS and Catalyst 3750-48PS switches do not support the XENPAKs.
WS-X6704-10GE 4-port 10-Gigabit Ethernet XENPAK is not supported by the Supervisor Engine 32.
Refer to Cisco 10GBASE XENPAK Modules for more information.