100G QSFP28 DAC direct‑attach copper cables, including QSFP28‑to‑QSFP28 and breakout QSFP28‑to‑4×SFP28 variants. Passive & active twinax copper cable, available in multiple lengths up to 5m. Compliant with QSFP28 MSA, IEEE 802.3bj 100GBASE‑CR4 and SFF‑8665 standards, ultra‑low latency, low power consumption, EMI‑shielded, hot‑pluggable and multi‑vendor compatible. Cost‑optimized short‑reach interconnect for intra‑rack / inter‑rack links in data center, ToR‑spine switching, HPC cluster and SAN storage networking。