CFNXKTWBR

CFNXKTWBR Dual M.2 NVMe PCIe x8 Expansion Adapter Card

Add two M Key NVMe SSDs through a single PCIe x8 slot for fast, consolidated desktop storage expansion

$106.44*
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*Price sourced from Amazon.com. Last updated:Aug 18, 2026.Price and availability are subject to change — details.

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Overview

The CFNXKTWBR dual M.2 adapter answers a specific desktop need: fitting two M Key NVMe SSDs into a system that has run out of onboard slots. It carries both drives on a single card and connects through a PCIe x8 interface, which the manufacturer positions for high-speed data transmission and file storage acceleration. This is a part aimed squarely at users expanding a PC's fast storage, whether to hold a growing media library or to speed up work that leans heavily on drive throughput. It is not a general-purpose adapter so much as a targeted capacity upgrade.

The catch sits in the setup. Because two drives share one physical connector, the card depends on PCIe bifurcation being enabled in the motherboard BIOS for normal operation. Boards that lack the option simply will not present both SSDs, making a compatibility check the first order of business. On construction, the source points to a sturdy circuit board and stable signal output, details that speak to reliability when a pair of NVMe drives is transferring data concurrently. Ownership, then, is straightforward for the technically comfortable: verify bifurcation support, seat the card, populate the slots, and you gain two NVMe bays where there were none.

Key Features

Memory Cards

Supports two M Key NVMe SSDs concurrently, PCIe bifurcation setting required in motherboard BIOS for normal use, high-speed data transmission, stable signal output, sturdy circuit board, perfect for PC high-speed storage expansion and file storage acceleration

Specifications

Brand
CFNXKTWBR
Product Type
Dual M.2 NVMe Expansion Adapter Card
Interface
PCIe x8
Drive Slots
Two M.2 M Key NVMe SSDs
Concurrent Support
Two drives simultaneously
Required Setting
PCIe bifurcation enabled in motherboard BIOS
Signal
Stable signal output
Board Construction
Sturdy circuit board
Intended Use
PC high-speed storage expansion and file storage acceleration

Frequently Asked Questions

Yes. The card requires PCIe bifurcation enabled in the motherboard BIOS for normal use, so both drives will only appear on boards that expose that setting.
Two. It supports two M Key NVMe SSDs concurrently on a single card, letting you expand storage through one PCIe x8 slot.
It accepts M Key NVMe SSDs. The card is designed specifically for two M Key NVMe drives, so verify your SSD uses the M Key interface before installing.
PC high-speed storage expansion and file storage acceleration. The manufacturer positions it for adding fast NVMe capacity and speeding up file-heavy tasks.
A PCIe x8 interface. Both drives route through this single connector, which the manufacturer describes as supporting high-speed data transmission.