QSFP28-100GB-ZR4-AT AdTran® Compatible Transceiver QSFP28 100GBase-ZR4 (1295nm to 1309nm, SMF, 80km, LC, DOM)QSFP28 100GB ZR4 AT AdTran Compatible Transceiver QSFP28 100GBase ZR4 (1295nm to 1309nm, SMF, 80km, LC, DOM) ATGBICS AdTran Compatible QSFP28 100GB ZR4 AT QSFP28 100GBase ZR4 form factor network transceiver supports a distance of up to 80km over single mode fibre (SMF) using a wavelength of 1295 to 1309nm via an LC Duplex connector. This product operates within a commercial temperature range. Digital optical monitoring (DOM) support is also present