Extreme

This collection holds Extreme hardware. The part listed is the CFP2-TO-QSFP28-MOD, an adapter module for 100GbE. The CFP2 end is the host side and the QSFP28 end is the module side. It uses CAUI-4 4x25G electrical mapping. It is listed as refurbished and ships as the module only, with no rack kit, power cables or console cord.

This adapter does not work alone. The listing says it needs a separate QSFP28 optic. Before you order, check that your port is a CFP2 port and that you already have a QSFP28 optic to place in the adapter. Also check that the 100GbE speed suits your link. If you are unsure whether this part fits your gear, use the quote form and give the part number of your switch or router before you buy.