Is there a difference in which sata to connect the hard drive?

Question

Iron

I assembled a new computer, connected ssd and hdd "anyhow" to sata slots, everything would be fine, but the hard one works extremely slowly,

at first I thought it was because of the small files that are synchronized in black. But I turned off all the extra software and just turned on copying from one folder to another, the speed is no more than 20-40 mb / sec, and if I turn on the speed test, it boldly gives out 100-115
Hence the question is whether I connected the hdd correctly and what can be done for "stable " hard work?
Motherboard msi z170a-g43 plus
hard SAMSUNG HD103SJ

Answer 1

you can try to change the SATA cable, there are glitches due to the cable.