Compatible 2.5GbE USB adpater for Qnap NAS

2.5g usb for qnap nas

hi do you know any 2.5GbE usb brand that can work with qnap nas?

Qnap have made their own 5GbE USB adapter QNA-UC5G1T. It is backwards compatible and will also support 1GbE and 2.5GbE network switches, cables and computer PCIe cards.

QNA-UC5G1T  in   UK  and USA

But if you prefer something cheaper and matching 2.5GbE speeds then look for the RTL8156 chip-based products.

Realtek based USB3-2.5Gbps:
Aquantia AQC11U based USB3-5Gbps (QNAP QNA-UC5G1T):

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 an 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 
  • 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 on Synology?

  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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2 thoughts on “Compatible 2.5GbE USB adpater for Qnap NAS

  1. Where did you find drivers for the RL8156 for Qnap? You only link to drivers for Synology. Added a Sabrent 2.5GbE USB Adapter NT-S25G but the Qnap doesn’t recognize it.

  2. These are Synology drivers, not QNAP drivers.
    I also tried generic RTL8156B and it is not recognized on QTS 4.5.4.
    I see that the mainline kernel driver is merged from kernel 5.13 and QTS 5 is “only” 5.10. Also, official Realtek non-tree driver works only for kernels up to 5.6 (on Unraid forums, they mention it works also on 5.8) so we might be out of luck until next big QTS update