---
product_id: 642386460
title: "JMT Support External Graphics Card M.2 M-Key to PCIE 4.0X4, Compatible with Oculink/M.2 NVMe Laptop eGPU?GDP Handheld (Dock-OC4)"
brand: "jmt"
price: "681 zł"
currency: PLN
in_stock: true
reviews_count: 5
category: "Jmt"
url: https://www.desertcart.pl/products/642386460-jmt-support-external-graphics-card-m-2-m-key-to
store_origin: PL
region: Poland
---

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

**Brand:** jmt
**Price:** 681 zł
**Availability:** ✅ In Stock

## Summary

> 🚀 Elevate your laptop’s power game with PCIe 4.0 speed and pro-level expansion!

## Quick Answers

- **What is this?** JMT Support External Graphics Card M.2 M-Key to PCIE 4.0X4, Compatible with Oculink/M.2 NVMe Laptop eGPU?GDP Handheld (Dock-OC4) by jmt
- **How much does it cost?** 681 zł with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pl](https://www.desertcart.pl/products/642386460-jmt-support-external-graphics-card-m-2-m-key-to)

## 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

- • **Powerful Yet Compact:** Supports small form factor power supplies (500W+), keeping your setup sleek without sacrificing power.
- • **Blazing PCIe 4.0 x4 Speed:** Unlock ultra-fast data transfer with Gen4 bandwidth, future-proofing your eGPU setup.
- • **Plug & Play Sync Start/Stop:** Experience smooth, synchronized power control with your host device—no hot-swap needed, just reliable performance.
- • **Pro-Grade Expansion Freedom:** Add high-performance graphics, sound, or network cards to your laptop or compact PC and join the elite pros maximizing their gear.
- • **Universal Oculink & M.2 Support:** Seamlessly expand your laptop or handheld’s GPU, network, or capture capabilities with broad device compatibility.

## Overview

The JMT Support External Graphics Card M.2 M-Key to PCIe 4.0X4 adapter enables laptops and handhelds with Oculink or M.2 NVMe ports to connect high-performance PCIe x4 devices such as GPUs, network, sound, or capture cards. It supports PCIe Gen4 speeds, requires a 500W+ ATX/SFX power supply, and offers synchronized start/stop functionality for seamless integration. Ideal for professionals seeking to dramatically boost their portable computing power with a compact, versatile expansion solution.

## 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: All works ok
Review: Was apprehensive but it works well

## Features

- Oculink compatible adapter card, supports devices with O culink port to expand PCIE card.
- Support M.2 port, through standard O culink extension cable to PCIE card.
- Support expansion 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 card only needs to be inserted into the?24P power supply, graphics card power is provided by other power supply.? Power supply must be 500W and above.
- This series of boxes does not support built-in power supply and limits the size of the graphics card. (Not include the O culink extension cord)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CRR7HMX5 |
| Additional Features | Unique Start/Stop Functionality |
| Best Sellers Rank | #97,076 in Computers ( See Top 100 in Computers ) #823 in Graphics Cards |
| Brand | JMT |
| Color | Black |
| Colour | Black |
| Compatible Devices | Desktop, Laptops |
| Compatible Phone Models | Universal |
| Compatible devices | Desktop, Laptops |
| Compatible phone models | Universal |
| Customer Reviews | 4.3 out of 5 stars 52 Reviews |
| Enclosure Material | Plastic Metal |
| Global Trade Identification Number | 00783798005388 |
| Item Weight | 0.32 Kilograms |
| Manufacturer | JMT |
| Mfr Part Number | F51620 |
| Model Name | AMD Radeon RX 6800 XT |
| Model Number | F51620 |
| Mounting Type | Tabletop Mount |
| Mounting type | Tabletop Mount |
| Special features | Unique Start/Stop Functionality |
| UPC | 783798005388 078379800538 |

## Product Details

- **Brand:** JMT
- **Colour:** Black
- **Compatible devices:** Desktop, Laptops
- **Compatible phone models:** Universal
- **Mounting type:** Tabletop Mount

## Images

![JMT Support External Graphics Card M.2 M-Key to PCIE 4.0X4, Compatible with Oculink/M.2 NVMe Laptop eGPU?GDP Handheld (Dock-OC4) - Image 1](https://m.media-amazon.com/images/I/51iEVpWlzmL.jpg)
![JMT Support External Graphics Card M.2 M-Key to PCIE 4.0X4, Compatible with Oculink/M.2 NVMe Laptop eGPU?GDP Handheld (Dock-OC4) - Image 2](https://m.media-amazon.com/images/I/5183qVZZ+zL.jpg)
![JMT Support External Graphics Card M.2 M-Key to PCIE 4.0X4, Compatible with Oculink/M.2 NVMe Laptop eGPU?GDP Handheld (Dock-OC4) - Image 3](https://m.media-amazon.com/images/I/61sSx6pySlL.jpg)
![JMT Support External Graphics Card M.2 M-Key to PCIE 4.0X4, Compatible with Oculink/M.2 NVMe Laptop eGPU?GDP Handheld (Dock-OC4) - Image 4](https://m.media-amazon.com/images/I/41v8sZnfUKL.jpg)
![JMT Support External Graphics Card M.2 M-Key to PCIE 4.0X4, Compatible with Oculink/M.2 NVMe Laptop eGPU?GDP Handheld (Dock-OC4) - Image 5](https://m.media-amazon.com/images/I/611lEjzLKRL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ All works ok
*by P***. on 6 March 2026*



### ⭐⭐⭐⭐⭐ Was apprehensive but it works well
*by T***6 on 20 August 2025*



### ⭐⭐⭐⭐⭐ Fa il suo mestiere
*by A***I on 11 March 2025*

Fa il suo mestiere. Su schede modeste come 4060Ti non crea neppure particolari colli di bottiglia. 3dMark ottiene punteggi pari al bus gen4 8X nativo

## 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 Poland*
*Store origin: PL*
*Last updated: 2026-03-21*