2.5 GbE USB adapter for Synology

Is there a 2.5 GbE USB adapter for Synology?

Before Aquantia based PCIe cards and adapters used to work. But Synology saw people using Qnap components inside Synology, so they blocked this chip. But realtek seems untouched still.

Yes, looks like bb-qq has made this possible. Also someone in Germany has put this into practice. I have added videos and links bellow from these. I will update you when I test this myself. And you will also see an article and video.

Here is what I found so far.

2.5GbE USB adapter for Synology



Realtek based USB3-2.5Gbps: https://github.com/bb-qq/r8152
Aquantia AQC11U based USB3-5Gbps (QNAP QNA-UC5G1T): https://github.com/bb-qq/aqc111

DSM driver for realtek RTL8152/RTL8153/RTL8156 based USB Ethernet adapters

This is a RTL8152/RTL8153/RTL8156 driver package for Synology NASes.

Supported NAS platform

  • DSM 6.2
  • apollolake based products
    • DS918+ (confirmed working)
    • DS620slim
    • DS1019+
    • DS718+
    • DS418play
    • DS218+

You can download drivers including other platforms from the Release page and determine a proper driver for your model from this page, but you might encounter some issues with unconfirmed platforms.

I very much appreciate if you report whether it works.

Supported RTL8156(2.5Gbps) based devices

Currently I only confirmed products marked “confirmed working”. If you got other products and they do not work, please create a issue with its vendor id.

  • ASUSTOR AS-U2.5G (Type-C, confirmed working)  USA   UK
  • Plannex USB-LAN2500R (Type-A, confirmed working, Japan only)   USA   UK
  • Buffalo LUA-U3-A2G (Type-A, confirmed working, Japan only)USA   UK
  • CLUB 3D CAC-1420 (Type-A) USA   UK
  • TUC-ET2G (Type-C)  USA   UK
  • CableCreation B07VNFLTLD (Type-A)USA   UK
  • Plugable 2.5G USB C and USB to Ethernet Adapter UK   USA 
  • StarTech.com USB 3.0 TYPE-A TO 2.5 GIGABIT  UK   USA 
  • Sabrent 2.5GbE USB Adapter NT-S25G  UK   USA

Aquantia AQC11U based adapters

  • USB 3.0 Type-C to 5GbE Adapter (QNA-UC5G1T) by QNAP


How to install

  1. Go to “Package Center”
  2. Press “Manual Install”
  3. Chose a driver package downloaded from the Release page.

Detailed instruction is here.

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4 thoughts on “2.5 GbE USB adapter for Synology

  1. Thank you for the turotial.

    Worked fine with DS218+ and CableCreation‎ CD0673 (https://www.amazon.com.au/gp/product/B07VNFLTLD/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&th=1)

    However, I have one query and I probably know the answer.

    Is it possible to do Link Aggregation with DS218+ eth port and USB-eth port?

    I do not see any option in Control Panel – Network – Network Interface – Create

  2. Also worked with DS 1817+ Avaton core CPU with r8152-avoton-2.15.0-5.spk at Plannex USB-LAN2500R (Type-A, Japan only)