---
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: "R$980"
currency: BRL
in_stock: true
reviews_count: 8
category: "Jmt"
url: https://www.desertcart.com.br/products/604015681-jmt-m-2-m-key-to-pcie-4-0x4-external
store_origin: BR
region: Brazil
---

# PCIe 4.0 x4 Gen4 bandwidth Oculink & M.2 NVMe compatibility Supports ATX/SFX 24P power input 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:** R$980
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate your eGPU game — power, speed, and compatibility in one sleek bracket!

## 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?** R$980 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.br](https://www.desertcart.com.br/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

- • **Smart Start/Stop Sync:** Unique synchronous power control with your host device for streamlined operation (note: no hot-swap).
- • **Blazing PCIe 4.0 x4 Speeds:** Unlock ultra-fast GPU and expansion card performance with Gen4 bandwidth, future-proofing your setup.
- • **Versatile Expansion Options:** Supports GPUs, network, sound, and capture cards — transform your device into a powerhouse workstation.
- • **Flexible Power Supply Support:** Compatible with ATX, SFX, and 1U power supplies (500W+), ensuring stable and scalable power delivery.
- • **Seamless Oculink & M.2 Integration:** Effortlessly expand your laptop or handheld’s capabilities with native Oculink and M.2 NVMe support.

## 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 high-speed PCIe 4.0 x4 expansion for GPUs and other PCIe cards, supports multiple power supply types (ATX/SFX/1U) with 500W+ requirements, and features a unique start/stop sync with the host device. Ideal for professionals seeking to supercharge compact systems with external graphics and expansion cards, this bracket offers 90-95% compatibility across tested devices, though it requires a separate Oculink cable and external GPU power supply.

## 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: A little sketchy, but it works - 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

## 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 |
| Additional Features | Unique Start/Stop Functionality |
| Best Sellers Rank | #259 in Computer Graphics Cards |
| Brand | JMT |
| Color | Black |
| Compatible Devices | Desktop, Laptops |
| Customer Reviews | 4.2 out of 5 stars 47 Reviews |
| Enclosure Material | Metal And Plastic |
| Global Trade Identification Number | 00783798005388 |
| Item Weight | 0.32 Kilograms |
| Manufacturer | JMT |
| Material | Metal And Plastic |
| Model Name | AMD Radeon RX 6800 XT |
| Model Number | F51620 |
| Mounting Type | Tabletop Mount |
| Special Feature | Unique Start/Stop Functionality |
| UPC | 783798005388 078379800538 |
| Unit Count | 1.0 Count |
| Warranty Description | 1 |

## 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)

## Available Options

This product comes in different **Size** options.

## 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).

### ⭐⭐⭐⭐ 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

### ⭐⭐⭐⭐⭐ Works well, solid build
*by S***W on January 30, 2026*

Works well, and constructed well. I would opt for the one with power supply along with it, but to save a few bucks, rock solid unit.

## 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 Brazil*
*Store origin: BR*
*Last updated: 2026-02-16*