Sd internal reader issue

Hi the internal Sd readear is very very slow.
I’m using it to expand the internal storage.
The reading/writing performance does not exceed the 20Mb/s value…
this is too slow for a normal use.
the same sd cards goes from 40Mb/s to more than 100 on esternal reader connected to usb port.
Do you have a solution? driver or bios settings?
thank you

Hallo gan dari indonesia ya … ada id kaskus Nga gan … inbox ya gan id kaskus nya