The best overall results have been achieved with the SANLink2 from Promise.

While in theory any 10GbE adapter with drivers for your macOS version should work, some of them are still not working as expected. Please be aware of the following known issues:

Aquantia based cards are not working
  • Internal 10GbE interface of the iMac Pro
  • Sonnet Solo 10G
Due to a bug in the driver those interfaces are still not working. We will need to wait for Apple to fix this.

SANLink3 T1
Driver looses ethernet packets. We are in contact with the chip manufacturer.

ThunderLink NT 1102 (10GBASE-T)
The product is end-of-life and is only supported up to macOS 10.11 by ATTO. Works very well on 10.11 though.