QDD-400G-LR8-S-40 Cisco® Compatible Transceiver QSFP-DD 400GBase-ER8 PAM4 (1310nm, SMF, 40km, LC, DOM)QDD 400G LR8 S 40 Cisco Compatible Transceiver QSFP DD 400GBase ER8 PAM4 (1310nm, SMF, 40km, LC, DOM) ATGBICS Cisco compatible QDD 400G LR8 S 40 QSFP DD 400GBase LR4 form factor network transceiver supports a distance of up to 40km over single mode fibre (SMF) using a wavelength of 1310nm via an LC Duplex connector. This product operates within a commercial temperature range. Digital optical monitoring (DOM) support is also present enabling real time