LORDWORLD OCuLink SFF-8611 8x to Dual SFF-8643 4x 50cm Active Cable

Internal connectivity for storage backplanes

This active cable splits a single OCuLink SFF-8611 8x 80pin male connector into two SFF-8643 4x 36pin male connectors. It is intended for builders who need to attach a backplane or direct-attached drives to a controller that only offers an 8-lane OCuLink port. The 50cm length suits typical chassis routing without excess slack. Systems must provide a free OCuLink 8x 80pin interface.

Sustained throughput up to 16Gbps

The active design supports a data transfer rate up to 16Gbps across the full 50cm span, maintaining signal integrity under continuous load rather than only in short bursts. Each 4x branch carries its share of the 8-lane bandwidth, so multiple drives can operate simultaneously without the cable becoming the bottleneck. The active latch on each mating part secures the connection against vibration-induced disconnects.

Low-profile thermal and power profile

As a passive copper assembly with integrated active equalisation, the cable draws minimal power from the host controller and generates negligible heat inside the chassis. No external power adapter or cooling is required, and the slim profile does not obstruct airflow around adjacent components. The secure latching mechanism eliminates intermittent contact that could cause retries and added latency.