Consuming 3.5 W and offering optimized transmission via internal uncooled 1,310 nm 28 Gbps Directly Modulated Laser (DML) technology, QSFP28 client-side transceiver meets CWDM4 MSA and CLR4 Alliance optical interface specifications as well as IEEE 802.3bm CAUI-4 electrical interface specification. CLR4-enabled design provides low latency for cloud and financial applications, and unit is capable of operating without Forward Error Correction protocol on host card.