R7HWN Dell® compatible Transceiver QSFP28 100GBase-ESR4-S (850nm, MMF, 300m, MPO-12, DOM)R7HWN Dell compatible Transceiver QSFP28 100GBase ESR4 S (850nm, MMF, 300m, MPO 12, DOM) ATGBICS Dell compatible R7HWN QSFP28 100GBase ESR4 form factor network transceiver supports a distance of up to 300m over multi mode fibre (MMF) using a wavelength of 850nm via an MPO 12 connector. This product operates within a commercial temperature range. Digital optical monitoring (DOM) support is also present enabling real time monitoring of the parameters of