Hi,

According to IEEE standards, MPO optics in a 40G QSFP+ SR4 transceiver are always male connectors, and therefore will always accept female MPO connectors.

Alcatel-Lucent QSFP-100G-LR4 compatible

References:

https://critterfam.com/forums/users/jnp-qsfp-100g-lr4/

https://everyonezone.com/read-blog/222365

https://sandbox.zenodo.org/record/1206645

https://telegra.ph/Elevate-Your-Network-Performance-with-QSFP-100G-SR4-Transceivers-Unleashing-High-Speed-Connectivity-from-GBIC-Shop-05-27

Thanks