HP Dual Graphics Adapter Not getting Full Res

[phiquach]

Hello,

I have a HP Folio 1040 and using an HP Dual Graphics Adapter.

I'm trying to get dual 30" Monitors with full resolution(2560x1600)

I am using an HP folio dock.

One cable from Monitor to dock works fine.

The cable connecting from monitor to Adapter is not getting the full resolution. It is only showing 1920 x 1200 instead of 2560x1600.

I have checked and made sure all drivers are updated.

I have disconnected the direct connection and leaving only the USB adapter but I am having the same issue.