SFF‑8611 4i to 4i internal OCuLink cable, male‑to‑male, 1 m. Extends a PCIe x4 link from a motherboard/HBA to an NVMe backplane or another OCuLink port. Shielded with locking latches; straight‑through (no protocol conversion). Supports PCIe Gen4/Gen3—1 m may down‑train to Gen3. Internal use only; not compatible with Mini‑SAS (SFF‑8643/8644) or external OCuLink (SFF‑8612).