Description
SFF-8639 68P Gen4 16GT/s with 15pin(4pin) PWR connector to SFF-8644 4x External Cable Assembly – U.2 to SFF-8644 for PCIe/SAS High-Speed Expansion
The Gen4 SFF-8639 68P female to Mini SAS HD 4x (SFF-8644) external cable assembly is a high-performance interconnect solution designed to bridge U.2 (SFF-8639) NVMe or SAS SSDs with external Mini SAS HD 4x interfaces. Supporting PCIe Gen4 at 16GT/s per lane, this cable integrates 15-pin SATA power and 4-pin sideband signaling, making it ideal for enterprise-class storage expansion, external enclosures, and high-throughput data applications.
Key Features:
- Connector Configuration:
- SFF-8639 68P female (U.2 interface with integrated 15-pin SATA power and 4-pin sideband)
- SFF-8644 plug (Mini SAS HD 4x external interface)
- Cable Type: External cable assembly for host-to-enclosure or U.2-to-expander connectivity
- Wire Gauge Range: Supports AWG 30 to AWG 28, balancing flexibility, durability, and high-speed signal integrity
- Controlled Impedance:
- 85 ohm for PCIe lanes
- 100 ohm for SAS lanes
- High-Speed Data Transfer:
- Supports PCIe Gen4 at 16GT/s per lane
- Compatible with SAS 3.0 (12 Gbps) for enterprise storage systems
- Power & Sideband Integration:
- 15-pin SATA power for drive operation
- 4-pin sideband for LED indicators, staggered spin-up, and enclosure management
- Robust Shielding: Ensures excellent EMI/RFI protection for stable, high-speed signal transmission
- RoHS Compliant: Manufactured in accordance with environmental standards for hazardous substances
Applications:
- Enterprise Storage Expansion: Connects U.2 NVMe or SAS SSDs to external Mini SAS HD controllers or JBOD enclosures
- Data Centers: Enables scalable, high-throughput storage architectures with external PCIe/SAS connectivity
- RAID Systems: Facilitates external drive-to-host communication with integrated power and sideband support
- Server Integration: Supports PCIe/SAS signal routing from internal U.2 ports to external storage modules
- Industrial & Embedded Platforms: Provides reliable, high-speed external connectivity for mission-critical systems








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