400G QSFP-DD PAM4 / LAN-WDM + APD/SOA 40km, Duplex LC Module, SSM, Compatible Transceiver

For our 400G QSFP-DD requirement, performance matches the advertised specification and the price is much better than OEM optics. Support was responsive when we asked for compatibility confirmation.

We ran an extended burn-in test before deployment. The temperature, Tx power, and Rx power stayed stable throughout the test window.

For our 400G QSFP-DD requirement, this was a direct replacement in our existing environment. No special tuning was required and the port came up at the expected speed.

We deployed this module in a live network and the link has remained stable under continuous traffic. The diagnostics are clear and the optical power margin is exactly where we expected it to be.

The mechanical fit is firm and the link did not flap during vibration checks. This is suitable for field networks where consumer-grade optics are risky.