Arista 400GBASE-ER4-30 QSFP-DD Transceiver, 30 km Duplex Single-Mode

Thirty kilometers puts the Arista QDD-400G-ER4 into regional link territory. It is a 400GbE QSFP-DD module for duplex single-mode fiber, titled 400GBASE-ER4-30.

Links of this length connect sites across a metropolitan area, so planning goes beyond the module itself: fiber loss and splices on the route need to fit the optic. Share your route details when you ask for pricing. Tell us the switch model and the route length when you request pricing. We will confirm that the module suits the link and whether any extra planning is needed on the fiber side.

For much shorter spans, other single-mode modules cost less to deploy, so use ER4 where distance really demands it. The ER4 is offered in new, refurbished and used condition. Warranty is 1 year or 3 years for new and refurbished, and 90 days for used.