Vszerda 12G SAS SFF-8643 to SFF-8087 Cable 0.3m 36Pin Sideband 100 Ohm

What it is and who it's for

This Vszerda cable connects a Mini SAS HD SFF-8643 port to a Mini SAS SFF-8087 port over 0.3 metres. It carries 36 pins with a sideband channel and is rated for 12 Gbps SAS and SATA links in servers, RAID systems and direct-attached storage. The 30 AWG twin-axial construction keeps the cable thin for tight chassis routing. Builders needing longer reach or a different pin count should look elsewhere.

Practical limits of the SAS interface

The assembly meets SAS 2.1 and 3.0 specifications with a controlled 100 Ohm impedance for low-skew signalling at 12 Gbps. The short 0.98-foot length minimises insertion loss but restricts placement to adjacent backplanes or controller cards within the same enclosure. No active equalisation is present, so the link budget relies entirely on the host and target transceivers.

Build quality and daily use

Twin-axial conductors and a flexible jacket allow clean routing in dense 2U or blade servers without blocking airflow. Male-to-male SFF-8643 and SFF-8087 connectors lock securely, resisting vibration in rack-mounted gear. The sideband pins carry SGPIO or I2C management signals, enabling enclosure services without extra cabling. The 0.3-metre reach suits fixed backplane-to-HBA layouts but cannot span between separate rack units.