Refurb Squared
D6000 4T4E4C, 4 x 400G QSFP-DD Transponder for D6000-CH1U Managed Chassis
D6000 4T4E4C, 4 x 400G QSFP-DD Transponder for D6000-CH1U Managed Chassis
ISO 14001:2015
ISO 45001:2018
ISO 9001:2015
The D6000 4T4E4C is a high-density single-slot 400G transponder card. It offers four individual transponders on the same card, and each can be used in 400G mode. The client side can use a flexible range of QSFP-DD client types for 400G, including DR4, LR4, FR4, SR8 and LR8. The line side can use coherent 400G ZR and 400G ZR+ QSFP-DDs.
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.





