[Speccy posting identical SMART data from HDD to External HDD]

I confirm, that USB drives show information from first internal drive

 

Me too...  From Speccy Professional Edition:

 

Storage

Hard drives

WDC WD10EZEX-21M2NA0

                                        Manufacturer      Western Digital

                                        Heads        16

                                        Cylinders    121,601

                                        Tracks       31,008,255

                                        Sectors      1,953,520,065

                                        SATA type  SATA-III 6.0Gb/s

                                        Device type Fixed

                                        ATA Standard      ACS2

                                        Serial Number     WCC3F3PLJTS1

                                        Firmware Version Number     01.01A01

                                        LBA Size     48-bit LBA

                                        Power On Count  249 times

                                        Power On Time    35.7 days

                                        Speed        7200 RPM

                                        Features    S.M.A.R.T., NCQ

                                        Max. Transfer Mode     SATA III 6.0Gb/s

                                        Used Transfer Mode     SATA III 6.0Gb/s

                                        Interface    SATA

                                        Capacity    931 GB

                                        Real size    1,000,204,886,016 bytes

                                        RAID Type  None

                                               

PHD 3.0 Silicon-Power USB Device

                                        Heads        16

                                        Cylinders    121,601

                                        Tracks       31,008,255

                                        Sectors      1,953,520,065

                                        SATA type  SATA-III 6.0Gb/s

                                        Device type Fixed

                                        ATA Standard      ACS2

                                        Serial Number     WCC3F3PLJTS1

                                        Firmware Version Number     01.01A01

                                        LBA Size     48-bit LBA

                                        Power On Count  249 times

                                        Power On Time    35.7 days

                                        Speed        7200 RPM

                                        Features    S.M.A.R.T., NCQ

                                        Max. Transfer Mode     SATA III 6.0Gb/s

                                        Used Transfer Mode     SATA III 6.0Gb/s

                                        Interface    USB (SATA)

                                        Capacity    931 GB

                                        Real size    1,000,204,886,016 bytes

                                        RAID Type  None