This Juniper Networks JNP-QSFP-40GE-IR4 compatible QSFP transceiver provides 40GBase-IR4 throughput up to 2km over single-mode fiber (SMF) at the wavelength specified betweenAddon Networks Jnp-qsfp-40ge-ir4-ao Juniper Networks Jnp-qsfp-40ge-ir4 Compatible Taa Compliant 40gbase-ir4 Qsfp Transceiver (smf 1270nm To 1330nm 2km Lc D available on July 30 2018 from PCMall for 1719.99