The SATA power and data connectors are exactly the same.
I want to change my 2.5in HDD for a 2.5in SSD.  I know that the Precision 3630 desktop will accept both 2.5in SATA HDDs and 2.5in SATA SSDs.  Are there different slots for HDDs vs SDDs?  Are the SATA connectors the same for HDDs and SSDs?  It wasn't clear in the manual.
Dell Precision 3630 desktop: Different slots or connectors for 2.5 in HDD vs 
2.5 in SSD