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The QSFP28 format has ability to run speeds of up to 112G by aggregating 4 channels of SFP28 transceivers into same fiber and same enclosure. Most popular models of QSFP28 transceivers are SR4 (multi-mode MPO connector), CLR4 (single-mode dual LC connector 2Km reach) and LR4 (dual LC for 10Km reach)

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