Product Description
Product Description
Product Name
PCIe 4.0 x16 to Dual SFF-8654 8i 1-to-2 Expansion Kit
Product Overview
This is a complete PCIe 4.0 x16 to dual SFF-8654 8i expansion kit. The kit includes 1 PCIe x16 host adapter card, 2 SFF-8654 to PCIe x16 base boards, and 2 SlimSAS SFF-8654 8i 75cm cables.
It is designed to extend one motherboard PCIe x16 slot to two PCIe x16 base boards through SFF-8654 high-speed cables. It is suitable for GPU, network card, U.2 SSD adapter, NVMe expansion card, capture card, RAID card, and other PCIe devices.
This kit is suitable for servers, workstations, open-frame PC builds, GPU testing platforms, industrial computers, and custom PCIe expansion systems.
Important: If you want to use two PCIe devices at the same time, your motherboard, CPU, and BIOS must support PCIe bifurcation, such as x8+x8 mode. Please confirm compatibility before purchase.
Key Features
1. Complete 1-to-2 Expansion Solution
The full kit includes the adapter card, two base boards, and two SlimSAS cables. It provides the required hardware for PCIe x16 to dual PCIe x16 expansion.
2. PCIe Gen4 High-Speed Design
Designed for PCIe 4.0 high-speed signal transmission and backward compatible with PCIe 3.0. Actual speed depends on your system configuration.
3. Dual SFF-8654 8i Connection
The host adapter card provides dual SFF-8654 8i ports. Each port connects to a PCIe x16 base board through one SlimSAS 75cm cable.
4. Supports x16 / x8+x8 / x4+x4+x4+x4 Mode
The kit can be used for PCIe lane split applications, but the actual mode depends on motherboard, CPU, and BIOS support. For two-device mode, x8+x8 bifurcation support is usually required.
5. Wide PCIe Device Support
Suitable for graphics cards, network cards, capture cards, U.2 SSD adapters, NVMe adapters, RAID cards, and other PCIe add-on cards.
6. Flexible Installation
The 75cm SlimSAS cables allow more flexible device placement and better internal layout for server chassis, test benches, workstations, and open-frame cases.
Specifications
Product Type: PCIe 4.0 x16 to Dual SFF-8654 8i Expansion Kit
Host Interface: PCIe x16
Downstream Interface: 2 x SFF-8654 8i
Base Board Slot: PCIe x16
Cable Type: SlimSAS SFF-8654 8i Cable
Cable Length: 75cm
Adapter Card Size: 148 x 70mm
Base Board Size: 145 x 37mm
Supported Standard: PCIe Gen4, backward compatible with PCIe Gen3
Supported Lane Mode: x16 / x8+x8 / x4+x4+x4+x4, depending on motherboard support
Supported Devices: GPU, Network Card, Capture Card, U.2 SSD Adapter, NVMe Adapter, RAID Card
Application: Server, Workstation, Open-Frame PC, GPU Test Bench, PCIe Expansion System
How It Works
Motherboard PCIe x16 Slot
→ PCIe x16 Host Adapter Card
→ 2 x SlimSAS SFF-8654 8i Cables
→ 2 x PCIe x16 Base Boards
→ PCIe Devices
For one device, the system may work in x16 mode depending on your connection and BIOS setting.
For two devices, the motherboard usually needs to support x8+x8 PCIe bifurcation mode.
Important Notes Before Purchase
This product is not a simple plug-and-play GPU riser cable. It is a PCIe expansion and bifurcation kit.
If you want to use two PCIe devices at the same time, your motherboard, CPU, and BIOS must support PCIe bifurcation.
Common supported BIOS modes may include x8+x8 or x4+x4+x4+x4.
If your motherboard does not support PCIe bifurcation, only one device may be recognized, or the system may not recognize multiple devices correctly.
Actual speed depends on the lowest standard among motherboard, CPU, PCIe slot, BIOS settings, adapter card, cable, base board, and connected PCIe device.
If one part of the system only supports PCIe 3.0, the whole connection may run at PCIe 3.0 speed.
Graphics cards still need their own external power cable if required. This kit does not replace GPU power cables.
Please do not hot-plug PCIe devices. Always turn off the computer before connecting or removing the adapter, cables, or devices.
Please make sure the SlimSAS cable is fully inserted into the SFF-8654 connector.
Some motherboards require BIOS updates or manual lane configuration before PCIe bifurcation can work.
Compatibility may vary depending on motherboard model, CPU PCIe lanes, chipset, BIOS version, operating system, and device driver.
Please confirm the package contents before purchase. If you only buy a cable, adapter card, or base board separately, it cannot complete the full 1-to-2 expansion by itself.
Buyer Compatibility Checklist
Before ordering, please confirm:
Your motherboard has a PCIe x16 slot.
Your motherboard supports PCIe bifurcation if using two devices.
Your CPU provides enough PCIe lanes.
Your BIOS supports x8+x8 or x4+x4+x4+x4 mode.
Your PCIe device supports riser / extension connection.
Your power supply can power the connected device.
You selected the correct product option or full kit.
FAQ
Q1: Can this kit connect two graphics cards?
Yes, but your motherboard, CPU, and BIOS must support PCIe bifurcation such as x8+x8 mode.
Q2: Why does my computer only recognize one device?
Usually because the motherboard does not support PCIe bifurcation or the BIOS lane mode is not set correctly.
Q3: Does this kit support PCIe 4.0?
It is designed for PCIe Gen4 applications and is backward compatible with PCIe Gen3. Actual speed depends on your hardware.
Q4: Can I use PCIe 3.0 devices?
Yes. If your motherboard or device only supports PCIe 3.0, the system will work at PCIe 3.0 speed.
Q5: Can I use it for U.2 SSD or NVMe expansion?
Yes, if your adapter and motherboard support the required PCIe lane mode.
Q6: Is this the same as a normal GPU riser cable?
No. This is a PCIe x16 to SFF-8654 expansion kit for advanced PCIe extension and bifurcation applications.
Q7: Does the kit power the GPU?
No. If your GPU needs external 6-pin, 8-pin, or other power connectors, you must connect power from the PSU.
Q8: Can I hot-plug the cable?
No. Please power off the system before installation or removal.
About Prime Living
Prime Living is a Canadian online store offering a carefully selected range of quality products for home, automotive, tools, outdoor living, electronics and more.
We are committed to fast order processing, secure packaging and reliable tracked shipping to provide an excellent shopping experience.
Shipping policy
We are always working hard to ensure your package arrives as soon as possible. Please understand that some factors like weather, high postal traffic, and the performance of shipping companies are outside of our control.
Returns
We offer a 14-Day Return Policy on items in which you are not completely satisfied with. You have the option of a full-refund or an exchange of the item.
Condition
Brand New
Shipping
This item is shipped directly from our supplier in China with tracking.
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