Hello,

Unfortunately, you will not be able to use 2 external extended screens. It is because macOS does not support MST technology - basically, the OS would "split" 1 video signal into 2 external monitors. But because macOS does not support this feature, then macOS cannot split this video signal - because of that both connected monitors will show the same picture ont both monitors.

You either need a docking station based on Thunderbolt or DisplayLink technology. Can you please contact our Technical support - support@itecproduct.com

Please let us know what MacBook do you have - and we can recommend you one of the docking stations.

Best Regards
i-tec Team

I have two screens working on the MacBook Pro: works.

I use the i-Tec with Mac Book pro. The MB loads very quickly on the i-Tec. But I don't have any experience with two screens.