QSFP-DD (Double Density) ine migero misere yemagetsi, ine data transmission rate inosvika 28Gbps NRZ kana 56Gbps PAM4, uye data rese reti kusvika ku200Gbps kana 400Gbps.QSFP-DD zvibatanidza uye magungano etambo anoenderana neIEEE 802.3bj, InfiniBand EDR uye SAS 3.0 zvakatemwa, saka zvakakodzerwa neakasiyana chizvarwa tekinoroji uye mashandisirwo.