Arista 100G QSFP28 ER4 1310nm 40km Optical Transceiver Module

Where the Arista-Coded Long Reach Optics 100G QSFP28 ER4 1310nm 40km is deployed

• Capacity expansion on existing systems
• Like-for-like replacement and spares holding
• New build-outs specified around a fixed platform

Questions buyers ask about this part

Will this work in my switch?

This one is Arista EOS coded. Optics and DAC carry vendor EEPROM, and a switch that does not recognise the coding will usually disable the port rather than negotiate a lower speed. Tell us the switch model and we will supply it coded correctly.

How far will 100G QSFP28 ER4 1310nm 40km reach?

Up to 40km over Singlemode OS2. That is the specified maximum on clean fibre with in-spec connectors; a run with several patch panels in it should be planned shorter. The connector is QSFP28. Send us the distance and the fibre type and we will confirm the right optic.

Is this Arista part genuine, and is the warranty intact?

Yes. We supply through authorized distribution only, so the part carries the full Arista manufacturer warranty and its firmware update path stays supported. No grey-market stock, no re-labelled drives, no voided warranties.

Do you offer volume pricing and accept purchase orders?

The listed price is per unit and indicative; tiered pricing applies at quantity. We accept purchase orders from qualified businesses, government and defence agencies, and educational institutions, with net terms and consolidated invoicing available. Email the quantity you need and we will come back within 48 business hours.