X2 transceiver

The X2 transceiver is a 10 gigabit per second modular fiber optic interface designed for use in routers, [1] switches and optical transport platforms. It is an early generation 10 gigabit interface related to XENPAK and XPAK formats. [2]X2 can be used with 10 gigabit ethernet or OC-192 / STM-64 speed SDH / SONET equipment.

X2 modules are smaller and consume more power than first generation XFP modules, but larger and more energy efficient than the standard XFP transceiver and standard SFP +.

As of 2016 this format is relatively uncommon and has been replaced by 10Gbit / s SFP + in most new equipment.


  1. Jump up^ “Cisco X2 Transceivers” .
  2. Jump up^ “X2 transceiver types” .

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