---
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: "€ 118.75"
currency: EUR
in_stock: true
reviews_count: 13
category: "Jmt"
url: https://www.desertcart.es/products/604015681-jmt-m-2-m-key-to-pcie-4-0x4-external
store_origin: ES
region: Spain
---

# PCIe 4.0 x4 Gen4 bandwidth Oculink & M.2 NVMe compatibility Supports ATX/SFX 500W+ PSU 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:** € 118.75
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate your rig: Turn any M.2 or Oculink port into a powerhouse GPU hub!

## 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?** € 118.75 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.es](https://www.desertcart.es/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

- • **Proven 90%+ Compatibility Rate:** Trusted by professionals using GDP handhelds and laptops, ensuring your investment works across multiple devices.
- • **Blazing Fast PCIe 4.0 x4 Speeds:** Unlock next-gen GPU and expansion card performance with ultra-low latency and max bandwidth.
- • **Plug & Play with Smart Start/Stop:** Enjoy synchronized power control with your host device for hassle-free setup and shutdown—no hot-swap needed.
- • **Flexible Power Support for Pro Builds:** Supports ATX, SFX, and 1U power supplies over 500W to fuel high-end GPUs without compromise.
- • **Seamless Oculink & M.2 NVMe Integration:** Effortlessly expand your laptop or handheld’s graphics and I/O capabilities with cutting-edge port compatibility.

## Overview

The JMT M.2 M-Key to PCIe 4.0 x4 External Graphics Card Stand Bracket is a sleek, high-performance adapter designed for professionals and enthusiasts looking to expand their laptop or handheld GPU capabilities. Compatible with Oculink and M.2 NVMe ports, it supports PCIe 4.0 x4 bandwidth, powering external GPUs, network, sound, and capture cards. It requires an external 500W+ power supply (ATX/SFX/1U) and offers smart start/stop functionality, boasting a 90%+ compatibility rate with tested devices. Perfect for those seeking to future-proof their compact setups with desktop-grade graphics power.

## 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: 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).
Review: 5 Stars! Worked right out of the box. - Works perfect with my RX 6800 XT. I have a Dell Optiplex 7070 SFF and low profile compatible video cards are limited. I upgraded the computer PSU to a HU365 (it has a pcie cable) and purchased a Dell D220P external power supply and PCIE X4 low profile card for the JMT M.2 Oculink. I plugged everything in and turned on the power. The computer recognized the GPU right away.

## 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 | #288 in Computer Graphics Cards |
| Color | Black |
| Customer Reviews | 4.2 4.2 out of 5 stars (46) |
| 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
- **Mounting Type:** Tabletop Mount
- **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

### ⭐⭐⭐⭐⭐ 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).

### ⭐⭐⭐⭐⭐ 5 Stars! Worked right out of the box.
*by K***C on May 15, 2024*

Works perfect with my RX 6800 XT. I have a Dell Optiplex 7070 SFF and low profile compatible video cards are limited. I upgraded the computer PSU to a HU365 (it has a pcie cable) and purchased a Dell D220P external power supply and PCIE X4 low profile card for the JMT M.2 Oculink. I plugged everything in and turned on the power. The computer recognized the GPU right away.

### ⭐⭐⭐⭐ Just one small quibble
*by C***W on August 8, 2025*

Could use a little documentation in the box, but once I puzzled out how to get it working, it did what I expected it to do.

## 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 Spain*
*Store origin: ES*
*Last updated: 2026-02-05*