BUCIER
BUCIER SF-105-0.5M-XY U.2 SFF-8639 68pin Male to Female Extension 50cm
Extends a U.2 NVMe PCIe SSD link with a 68-pin male-to-female cable rated for 2 GB/s on PCIe 2.0 and 4 GB/s on PCIe 3.0
- ColorSFF-8654 to SFF-8654 Female
- Connector DetailU.2 Sff-8639 68pin Male to Female
- ConductorCopper
- Extends U.2 NVMe connections by 50cm
- 68-pin SFF-8639 male-to-female connector layout
- Copper conductors carry PCIe 2.0 at 2 GB/s
- Copper conductors carry PCIe 3.0 at 4 GB/s
- Designed only for U.2 NVMe, not SATA or SAS
U.2 SFF-8639 68-pin extension cable
This 50 cm male-to-female cable extends a U.2 NVMe PCIe link by half a metre. It uses copper conductors and carries the 68-pin SFF-8639 interface between drive and backplane or controller. The assembly is supplied new and intended for internal cabling in storage builds.
Fits between U.2 drive and host connector
The male plug attaches to the host or backplane while the female receptacle accepts the drive’s U.2 connector, freeing routing space inside the chassis. It requires a matching SFF-8639 port on each side and does not adapt to SATA or SAS devices. No additional power leads or active circuitry are included.
Supports PCIe 2.0 at 2 GB/s and PCIe 3.0 at 4 GB/s
At the rated speeds the cable handles typical NVMe workloads with headroom for sequential reads and writes. Bandwidth drops to the 2.0 ceiling if the host or drive negotiates the older revision, so maximum throughput depends on the connected endpoints. The half-metre length keeps signal loss low for standard U.2 distances.
Highlights
- Extends U.2 NVMe connections by 50cm
- 68-pin SFF-8639 male-to-female connector layout
- Copper conductors carry PCIe 2.0 at 2 GB/s
- Copper conductors carry PCIe 3.0 at 4 GB/s
- Designed only for U.2 NVMe, not SATA or SAS
Specifications
| Brand | BUCIER |
|---|---|
| Model | SF-105-0.5M-XY |
| Color | SFF-8654 to SFF-8654 Female |
| Connector Detail | U.2 Sff-8639 68pin Male to Female |
| Conductor | Copper |
Questions about this item
How far can the cable reach before signal loss at PCIe 3.0 speeds?
The 50 cm extension supports the full 4 GB/s rate of PCIe 3.0; longer runs would exceed the spec and risk errors.
Does the cable generate noticeable heat or need active cooling during continuous NVMe workloads?
Passive copper conductors carry the signal without measurable heat rise; no fan or heatsink is required.
What host connector must already be present for this male-to-female cable to plug in?
A U.2 SFF-8639 68-pin female port on the motherboard or backplane is required.
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