QDD-400GB-VSR4-DE Dell® Compatible Transceiver QSFP-DD 400GBase-SR8 PAM4 (850nm, MMF, 100m, MPO-12, DOM)QDD 400GB VSR4 DE Dell compatible Transceiver QSFP DD 400GBase SR4 PAM4 (850nm, MMF, 50m, MPO 12 APC DOM) ATGBICS Dell compatible QDD 400GB VSR4 DE QSFP DD 400GBase SR4 form factor network transceiver supports a distance of up to 50m over multi mode fibre (MMF) using a wavelength of 850nm via an MPO 12 APC connector. This product operates within a commercial temperature range. Digital optical monitoring (DOM) support is also present enabling real time