10124-PCW is a 10GBASE-ER XFP Transceiver, generic for Extreme Networks 10124. It is guaranteed compatible for all Extreme Networks switch and router product lines. This transceiver can be mixed and deployed with Extreme Networks OEM transceivers for seamless network performance and interoperability. PC Wholesale offers a LIFETIME advance replacement warranty on all transceivers (compared to 90 days from most OEM manufacturers).