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Overview

Shielded PCIe4.0 x4 full-speed M.2 to PCIe x16 riser, converts laptop M.2 NVMe slot for external desktop GPU, ideal for 3A games, 3D modeling and AI computing.

M.2 NVMe M-Key to PCIe 4.0 x16 Riser Cable, External eGPU Expansion Adapter for Laptops & Mini PCs, Low Latency Discrete Graphics Extension for Gaming & AI Rendering

Model: M2-MKEY-PCIe4-GPU-RI
Web Code: 20015041
Sold and shipped by | 1.0 seller rating (2 reviews)

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Warranty

Check with the manufacturer for details.

For Quebec residents: See the Availability Guarantee disclosure in the Specifications section below.

This professional M.2 M-Key to PCIe 4.0 x16 riser extension cable is designed for thin notebooks, NUC mini PCs and ITX small hosts with spare M.2 NVMe slot. It adopts multi-layer copper foil shielded flat FPC wire, native PCIe4.0 x4 64Gbps full bandwidth transmission, far lower latency than Thunderbolt eGPU solutions. It can connect full-size desktop discrete graphics via standard PCIe x16 slot and match ATX/SFX power supply to supply high TDP graphics, perfectly solve the weak graphics performance problem of thin laptops, widely used by game players, 3D designers and AI developers.

Key Features

Exclusive M.2 M-Key NVMe Interface

Only compatible with M-Key M.2 NVMe slots, support 2230/2242/2260/2280 full-size M.2 specifications. Cannot work with B-key, B+M-key SATA/WiFi M.2 slots, occupy independent PCIe channel without sharing bandwidth with onboard storage.

PCIe 4.0 x4 Full Bandwidth, Ultra-Low Signal Loss

Native PCIe4.0 x4 64Gbps bidirectional bandwidth, backward compatible PCIe3.0/2.0. Multi-layer shielding flat cable blocks electromagnetic interference from CPU and power supply, no frame drop or performance attenuation under ray tracing, 8K rendering and long-time high load operation.

Standard PCIe X16 Full-Length GPU Slot

Full physical PCIe x16 slot, compatible with all single/dual/triple fan NVIDIA RTX 30/40/50 series and AMD RX desktop graphics. Reserved 6+8Pin GPU auxiliary power interface, match universal ATX/SFX power supply to stably drive high-power flagship graphics cards.

Flexible Shielded Flat Cable & Fixed Design

Soft bendable FPC ribbon wire, multiple length options for different chassis layout. Both ends pre-drill fixing holes with matching screws to lock PCB boards and avoid loose contact caused by vibration or movement. Hollow PCB for passive heat dissipation to prevent chip overheating.

Wide Cross-System Compatibility

Support Windows 10/11, Linux, Unraid, TrueNAS systems. No extra bridge chip driver needed, just install official graphics driver. Not support hot swap; must shut down the host before plugging/unplugging. Suitable for mini PC, thin gaming laptop external eGPU modification.

For Quebec residents – Disclosure under the Consumer Protection Act

In compliance with Bill 29, Best Buy and third-party sellers on Best Buy Marketplace do not guarantee the availability of replacement parts, repair services, or maintenance information for any products. Coverage provided through any Best Buy Protection programs and applicable manufacturer warranties, if any, remain in place. Please contact the manufacturer directly for information about their availability guarantee.

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Processing Time

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Product Category
Computer accessories
Return/Exchange Period
30 days
Condition
Opened

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