Why is SATA 2 not running at full speed?

Question

laptops

I have a SATA 2 connector in my laptop. I put an SSD SATA 3 disk in it. I installed fresh drivers.
When copying a large file, the speed is about 120 megabytes / sec. Although, in my opinion, even on SATA 1, the speed should be 150 megabytes / sec. And SATA 2 - 300 megabytes / sec. Why is the speed not even up to SATA 1 when it should be SATA 2?

Answer 1

and what does sata and the physical ability to work with a disk at the limit of the capabilities of a given connection have to do with it?)

Answer 2

In order to copy to 150, the disk must also give to 150, too. Add reads and writes and you get SATA2 throughput. So everything is fine with you.

Answer 3

What kind of disk is it, maybe this is the speed limit of the disk itself, regardless of the connector, and the sata number was simply written by marketers.

Answer 4

What is the SATA operating mode in the BIOS, IDE or AHCI?