[SOLVED] Physical differences between SATA1, SATA2 , SATA3?

[AlexsvonMüller]

Any single difference that eye can easily spot?

 

[bignastyid]

No. The ports are the same. Designed this way for compatibility.

 

[popatim]

They are only different in their internal electronic communication connection much like differences in wifi connections. Sata will autonogtiate to work at the connection speed of the slowest device. Ie - Sata3 port with a Sata 1 drive will run at Sata1; sata1 port with a sata2 drive will work at sata1 speed.

This is not really a problem for HDD's which many cannot saturate even sata1 speeds