---
product_id: 604015681
title: "JMT M.2 M-Key to PCIE 4.0X4 External Graphics Card Stand Bracket Compatible with Oculink/M.2 NVMe Laptop eGPU?GDP Handhelds (Dock-OC4)"
brand: "jmt"
price: "3335391₫"
currency: VND
in_stock: true
reviews_count: 13
category: "Jmt"
url: https://www.desertcart.vn/products/604015681-jmt-m-2-m-key-to-pcie-4-0x4-external
store_origin: VN
region: Vietnam
---

# PCIe 4.0 x4 Gen4 bandwidth Supports ATX/SFX 500W+ power supply Oculink & M.2 port compatibility JMT M.2 M-Key to PCIE 4.0X4 External Graphics Card Stand Bracket Compatible with Oculink/M.2 NVMe Laptop eGPU?GDP Handhelds (Dock-OC4)

**Brand:** jmt
**Price:** 3335391₫
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate your eGPU game with pro-grade PCIe power!

## Quick Answers

- **What is this?** JMT M.2 M-Key to PCIE 4.0X4 External Graphics Card Stand Bracket Compatible with Oculink/M.2 NVMe Laptop eGPU?GDP Handhelds (Dock-OC4) by jmt
- **How much does it cost?** 3335391₫ with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/604015681-jmt-m-2-m-key-to-pcie-4-0x4-external)

## Best For

- jmt enthusiasts

## Why This Product

- Trusted jmt brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Compact, Modular Design:** Slim, bracket-style adapter fits small form factors—perfect for sleek, professional setups.
- • **Blazing PCIe 4.0 x4 Speeds:** Unlock ultra-fast Gen4 bandwidth for next-level GPU and expansion card performance.
- • **Plug & Play Sync Start/Stop:** Smart synchronous power control with your host device for hassle-free operation.
- • **Powerful External PSU Ready:** Supports robust 500W+ power supplies to fuel high-performance graphics and PCIe cards.
- • **Universal Oculink & M.2 Support:** Seamlessly expand your laptop or handheld’s capabilities with versatile port compatibility.

## Overview

The JMT M.2 M-Key to PCIe 4.0 x4 External Graphics Card Stand Bracket is a cutting-edge adapter designed for Oculink and M.2 NVMe laptops and handhelds. It enables expansion of PCIe devices including GPUs, network, sound, and capture cards with blazing Gen4 speeds. Supporting ATX/SFX power supplies of 500W+, it offers smart synchronous start/stop functionality and broad compatibility, making it an essential upgrade for professionals seeking desktop-grade graphics performance on portable systems.

## Description

JMT M.2 M-Key to PCIE 4.0X4 External Graphics Card Stand Bracket Compatible with Oculink / M.2 NVMe Laptop eGPU GDP Handhelds Product Description: 1, O culink adapter board, support devices with O culink port to expand PCIE card. 2, Support M.2 port, through the standard O culink extension cable to PCIE card. 3, Support expanding GPU graphics card, PCIE network card, PCIE sound card, PCIE capture card, etc. PCIE array card only supports X4 devices. 4, The maximum bandwidth speed is PCIE 4.0 X4 GEN4, backward compatible with GEN3. 5, Support ATX\SFX\small 1U power supply, the adapter board only needs to be inserted into the 24P power supply, the graphics card power supply is provided by other power supplies. Power supply should be 500W and above. 6, Support synchronous start and stop following the host, does not support hot-swap. 7, Only GDP handhelds with o culink ports have been successfully tested for compatibility, other hosts with O culink ports are still being collected. 8, The successful compatibility rate is 90% for laptops with M.2 ports, 95% for small hosts with M.2 ports, and 95% for other hosts. 9, This series of kit products do not include O culink extension cable, need to purchase separately. 10, This series of boxes do not support built-in power supply, and limit the size of the graphics card.

Review: Failed for dual gpu use. - Lack of information and could not find display. Very frustrating to use.
Review: Inexpensive and works, I'm an Oculink believer now. - Works. Nice that includes the m.2 Oculink adapter. Be sure to buy an Oculink cable. I have a mini PC that only has (1) M.2 PCIE x4 4.0 slot, so I had to clone my MVME to SATA drive. Comparing FPS with games that struggled, it's apparent that Oculink > USB4/TB4. I wish this had a Power supply mount, and that the Oculink port was more accessible towards the bracket of the graphics card. The power switch on Auto didn't work, so I toggles it to On. Works like a charm. There's potential to 3d print an enclosure. Install notes: ONLY plug your power supply to the 24-pin connector (check/green). DO NOT connect power to the connectors circled in res (X/red). If your GPU requires PCI-E power, plug those power supply cables directly to the GPU power connectors (not dock).

## Features

- Oculink-Compatible adapter board, support devices with O culink port to expand PCIE card.
- Support M.2 port, through the standard O culink extension cable to PCIE card.
- Support expanding GPU graphics card, PCIE network card, PCIE sound card,?PCIE capture card, etc. PCIE array card only supports X4 devices.
- Support ATXSFXsmall 1U power supply, the adapter board only needs to be inserted into?the 24P power supply, the graphics card power supply is provided by other power supplies.??Power supply should be 500W and above.
- This series of boxes do not support built-in power supply, and limit the size of the graphics card. (Do not include O culink extension cable)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CRR7HMX5 |
| Best Sellers Rank | #196 in Computer Graphics Cards |
| Color | Black |
| Customer Reviews | 4.2 4.2 out of 5 stars (45) |
| Date First Available | January 8, 2024 |
| Item Weight | 11.3 ounces |
| Item model number | F51620 |
| Manufacturer | JMT |
| Package Dimensions | 8.07 x 4.02 x 1.65 inches |
| Special features | Unique Start/Stop Functionality |

## Product Details

- **Brand:** JMT
- **Color:** Black
- **Compatible Devices:** Desktop, Laptops
- **Material:** Metal And Plastic
- **Special Feature:** Unique Start/Stop Functionality

## Images

![JMT M.2 M-Key to PCIE 4.0X4 External Graphics Card Stand Bracket Compatible with Oculink/M.2 NVMe Laptop eGPU?GDP Handhelds (Dock-OC4) - Image 1](https://m.media-amazon.com/images/I/51iEVpWlzmL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Failed for dual gpu use.
*by S***H on March 19, 2025*

Lack of information and could not find display. Very frustrating to use.

### ⭐⭐⭐⭐⭐ Inexpensive and works, I'm an Oculink believer now.
*by M***. on January 25, 2025*

Works. Nice that includes the m.2 Oculink adapter. Be sure to buy an Oculink cable. I have a mini PC that only has (1) M.2 PCIE x4 4.0 slot, so I had to clone my MVME to SATA drive. Comparing FPS with games that struggled, it's apparent that Oculink > USB4/TB4. I wish this had a Power supply mount, and that the Oculink port was more accessible towards the bracket of the graphics card. The power switch on Auto didn't work, so I toggles it to On. Works like a charm. There's potential to 3d print an enclosure. Install notes: ONLY plug your power supply to the 24-pin connector (check/green). DO NOT connect power to the connectors circled in res (X/red). If your GPU requires PCI-E power, plug those power supply cables directly to the GPU power connectors (not dock).

### ⭐⭐⭐⭐ A little sketchy, but it works
*by E***N on September 10, 2024*

It worked more or less perfect. The only problem I had was the I couldn’t get it to turn on using the turn on with pc startup so I had to set it to be on 24/7, but that wasn’t exactly a problem for me since I intended for the pc to never turn off since it runs a whole bunch of servers

## Frequently Bought Together

- JMT M.2 M-Key to PCIE 4.0X4 External Graphics Card Stand Bracket Compatible with Oculink/M.2 NVMe Laptop eGPU?GDP Handhelds (Dock-OC4)
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*Product available on Desertcart Vietnam*
*Store origin: VN*
*Last updated: 2026-01-29*