Refurb Squared
Arista Compatible 400GBASE-ER4L QSFP-DD 8 x 50G PAM4 1310nm 30km DOM Duplex LC/UPC SMF Optical Transceiver Module
Arista Compatible 400GBASE-ER4L QSFP-DD 8 x 50G PAM4 1310nm 30km DOM Duplex LC/UPC SMF Optical Transceiver Module
ISO 14001:2015
ISO 45001:2018
ISO 9001:2015
The 400GBASE-ER4L module, Duplex LC connector, up to 30km over parallel single-mode fiber with 400G KP4 FEC. It is compliant to IEEE 802.3bs protocol and 400GAUI-8, QSFP-DD MSA. The module converts 8 channels of 50Gb/s (PAM4) electrical input data into four LAN-WDM optical signals, multiplexed into one channel for 400Gb/s optical transmission. The 400 Gigabit Ethernet signal is carried over four LAN WDM wavelength grid wavelengths. Multiplexing and demultiplexing of the four wavelengths are managed within the device.It is suitable for Data Center, Enterprise networking.
Enterprise Grade Performance
Enterprise Grade Performance
Our networking cables and optical transceivers are designed for high-performance enterprise networks. They support fast data transmission, stable connectivity, and consistent signal strength across switches, servers, and routers.
Wide Device Compatibility
Wide Device Compatibility
These modules are engineered to work with many leading networking brands such as Cisco, Juniper, Arista, and other enterprise systems. They integrate easily into existing network infrastructure.
Simple Plug And Play Setup
Simple Plug And Play Setup
Installation is quick and easy. Simply insert the cable or transceiver into the compatible port and it begins operating immediately without complicated configuration.
Reliable Connection Stability
Tested And Verified Products
Affordable Enterprise Pricing

Competitive Pricing
Refurb Squared networking hardware delivers high-speed connectivity using tested optical modules and enterprise-grade cables built for reliability and seamless device compatibility.
Built For Reliable Networking
At Refurb Squared we provide high-quality networking hardware trusted by engineers and IT professionals. Our mission is to deliver reliable technology at affordable prices.





