QNAP CAB-SAS30M-8644-8088 Mini SAS External Cable SFF-8644 to SFF-8088 3M
Overview
The CAB-SAS30M-8644-8088 is a 3-meter Mini SAS external cable that bridges an SFF-8644 host port to an SFF-8088 expansion port — the specific connector pairing required when attaching QNAP SAS expansion enclosures and host bus adapters that use the older SFF-8088 interface to newer SFF-8644-equipped systems. At 3 meters, it provides enough slack for adjacent rack-unit installations without coiling excess cable through the rack.
Compatibility
This cable is verified for use with the following QNAP platforms and accessories:
- REXP-1220U-RP: 12-bay 2U SAS JBOD expansion enclosure
- REXP-1620U-RP: 16-bay 2U SAS JBOD expansion enclosure
- SAS-12G2E: dual-port 12Gb/s SAS expansion card (requires SFF-8644 host side)
- ES1640dc v2: enterprise ZFS NAS requiring external SAS expansion
- EJ1600: 16-bay SAS JBOD expansion unit
Note: if your host HBA or enclosure uses SFF-8644 on both ends, the QNAP accessories line includes the CAB-SAS30M-8644 variant (SFF-8644 to SFF-8644, also 3M). Confirm which SFF standard your enclosure's rear panel uses before ordering — SFF-8088 and SFF-8644 are not interchangeable.
Installation Notes
Route the cable along the rear of the rack before securing enclosures to their final rack positions — the 3M length does not allow repositioning once both ends are seated and enclosures are pushed in. SFF-8088 connectors use a latch-lock mechanism; seat fully until the latch clicks. SFF-8644 connectors are tool-free friction-lock; verify seating by gently pulling back after insertion. Do not bend the cable sharply within 10cm of either connector end, as internal signal pairs in Mini SAS cables are susceptible to impedance shifts at tight bend radii.
