PCIe 4.0 x16 to x16 / x8 x8 SlimSAS SFF-8654 Graphics Card Splitter GPU Extension Cable 1 to 2 Supports Motherboard Bifurcation

Product Model: F3345B Series (F34B-F35B)

Product Name: PCIe 4.0 x16 SlimSAS SFF-8654 Splitter Extension Cable

Cable Length: 50cm, 100cm

Speed Bandwidth: PCIe 4.0 x16, Gen4 256Gbps, backward compatible with Gen3 and Gen2

Purchasing Note: Please purchase 1-2 samples for testing and verification before bulk ordering.

Friendly Reminder: Incorrect assembly or improper operation may damage your equipment.
For professional engineers only.

Cable Length and Pin Spacing Notes:

Cable length refers to the length of the SlimSAS SFF-8654-8i cable.

Accessory Notes: Includes one SATA power adapter cable.
Must be connected to the white connector to have 12V power supply.

Product Model Description

Model	Description	Bandwidth
F34B-F35B	PCIe 4.0 x16 to x16 Extension Cable (1-to-1)	PCIe 4.0 x16
F34B-F35B-D8S	PCIe 4.0 x16 to x8x8 Extension Cable (1-to-2)	PCIe 4.0 x8x8
SAS-8654-004	SlimSAS SFF-8654-8i to SFF-8654-8i Cable	PCIe 4.0 x8
SAS-8654-016	SlimSAS SFF-8654-8i to SFF-8639 Cable (1-to-2)	PCIe 4.0 x4+x4
SAS-8654-030	SlimSAS SFF-8654-8i to SFF-8611 Cable (1-to-2)	PCIe 4.0 x4+x4

Product Advantages:

1. Mesh-covered cables ensure stable speed and resistance to pulling.

2. UL-certified PCB material delivers excellent conductivity.

3. Connector housing made of PA10T/LCP with 15µ" gold-plated terminals
for durable insertion/removal, meeting RoHS/Free(HF) requirements
for high-frequency applications.

4. Advanced design and precision craftsmanship ensure stable signal quality,
optimized routing, and effective isolation.
Meets PCIe 4.0 standards for diverse applications.

5. This PCIe adapter cable supports modular splitting. Supports motherboard
Bifurcation PCIe configurations for 1-to-1, 1-to-2, or 1-to-4 connections.
Flexible design for broad applicability.

Product Images:

F34B:

F35B:

Combo:

SlimSAS SFF-8654-8i Cable：

SlimSAS SFF-8654-8i to SFF-8639（U.2）cable：

SlimSAS SFF-8654-8i to SFF-8611（OCuLink）cable：

Technical FAQ:

What is the maximum achievable speed for the product?

In actual testing, a single F34B adapter connected to a
PCIe x16 slot supports two devices simultaneously,
achieving full PCIe 4.0 x8 transfer speeds.

Can the F34B support 4 devices when paired with SFF-8654 to SFF-8611
or SFF-8654 to SFF-8639 cables?

F34B supports 1-to-4 configurations in actual testing.

Using an SFF-8654 to SFF-8611 cable with our F9G product
enables 1-to-4 support at PCIe x4 4.0 speeds.

Using an SFF-8654 to SFF-8639 cable to connect U.2 drives
enables one-to-four support, achieving full PCIe x4 4.0 speed.

How can I verify if my motherboard supports PCIe Bifurcation?

Please consult your motherboard manual. The manual or BIOS options
will specify “Bandwidth PCIe Channel Splitting” or “Bifurcation” settings.
If not mentioned, it is not supported.