Product Description
This Mini SAS HD to U.2 NVMe connector cable is designed for linking a backplane or HBA using an SFF-8643 interface to a 2.5" U.2 / SFF-8639 solid-state drive. High-speed twinax wire cable and precision-machined copper terminals provide controlled impedance and low insertion loss, allowing stable transmission of high-frequency differential signals for SAS or PCIe NVMe storage.
The entire assembly is wrapped with a rugged black braided sleeve that protects the electrical cable bundle against abrasion while keeping routing neat inside dense server and workstation chassis. Positive-latch connectors on both ends ensure secure mating with host and drive PCBs even under vibration, making this harness suitable for 24/7 data-center environments. OEM and ODM customization are supported, including special pin-outs, different cable lengths, custom labels, or integration with other power and data connectors in one harness for complex storage modules.
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| Product Type |
High-speed Mini SAS HD to U.2 NVMe cable assembly |
| Interface Standard |
SAS 3.0 / PCIe NVMe, SFF-8643 host to SFF-8639 drive |
| Connector A |
Mini SAS HD 36Pin connector (SFF-8643), host side |
| Connector B |
U.2 / SFF-8639 68Pin connector, device side |
| Connector Feature |
Positive latching, gold-plated signal terminals |
| Function |
High-speed differential signal transmission, power lines integrated for U.2 SSD |
| Lane Count |
x4 PCIe / 4 SAS lanes (typical) |
| Max Bandwidth |
Up to 12 Gb/s per lane for SAS or 32 Gb/s PCIe Gen3 aggregate (design dependent) |
| Conductor |
High-quality copper twinax wire for high-speed data pairs, separate power wires |
| Cable Structure |
Individually shielded pairs plus overall braid/foil shield |
| Outer Jacket |
Inner PVC jacket with black PET braided sleeving for abrasion protection |
| Color |
Black braided cable with labeled connectors |
| Wire Gauge |
Data: 30/28AWG twinax; Power: 20–24AWG copper (customizable) |
| Operating Voltage |
3.3 V / 5 V / 12 V power rails to U.2 connector (system dependent) |
| Operating Temperature |
-20 °C to +80 °C |
| Cable Length |
Typical 0.5–1.0 m (length and pitch customization available) |
| Compliance |
RoHS / REACH; meets SAS / PCIe high-speed electrical requirements |
| Custom Options |
Length, wire gauge, sleeving color, label printing, custom PCB pin-out or hybrid storage harness |
Applications
Connecting U.2 NVMe SSDs to Mini SAS HD ports on RAID/HBA cards or motherboard headers
High-density enterprise server and storage arrays, JBOD and JBOF enclosures
PCIe-based all-flash systems and hybrid SAS/NVMe backplanes on industrial PCB designs
Workstations, edge-computing nodes and telecom equipment requiring compact, reliable storage interconnects
Custom storage appliances and OEM chassis where braided, low-profile cabling improves airflow and cable management
Precautions
Verify that the host port is SFF-8643 and the drive uses a standard U.2 / SFF-8639 interface; do not force the connector into incompatible sockets to avoid bending pins.
Observe the recommended bend radius of the twinax wire cable to maintain impedance control and prevent degradation of high-speed signal transmission.
Ensure the system’s power budget supports the connected U.2 SSD; this harness only routes power rails provided by the host and does not include its own regulation.
Route the assembly away from sharp metal edges and strong EMI sources; secure it with clips or ties so that stress is not transferred to the board-mounted terminals.
Custom harnesses combining multiple Mini SAS HD links, alternative pitch connectors, or additional automotive / industrial grade protections can be supplied for batch projects.
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