Hey Alan!  
    
  I should have posted these different usb sata adapters just to make sure  
  everything as it should be.  Same machine, same drive, different cables on  
  different usb version interfaces.  
    
  usb-a sata adapter:  
  :read !dmesg  
  [ 8055.515419] usb 9-1: new SuperSpeed USB device number 3 using xhci_hcd  
  [ 8055.527245] usb 9-1: New USB device found, idVendor=152d, idProduct=0576,  
  bcdDevice=12.14  
  [ 8055.527249] usb 9-1: New USB device strings: Mfr=1, Product=2,  
  SerialNumber=3  
  [ 8055.527252] usb 9-1: Product: SABRENT  
  [ 8055.527254] usb 9-1: Manufacturer: SABRENT  
  [ 8055.527256] usb 9-1: SerialNumber: 0000000000015  
  [ 8055.528742] scsi host0: uas  
  [ 8055.529334] scsi 0:0:0:0: Direct-Access     SABRENT  
  1214  
  PQ: 0 ANSI: 6  
  [ 8056.232787] sd 0:0:0:0: [sda] 976773168 512-byte logical blocks: (500  
  GB/466 GiB)  
  [ 8056.232791] sd 0:0:0:0: [sda] 4096-byte physical blocks  
  [ 8056.233008] sd 0:0:0:0: [sda] Write Protect is off  
  [ 8056.233011] sd 0:0:0:0: [sda] Mode Sense: 53 00 00 08  
  [ 8056.233382] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled,  
  doesn't support DPO or FUA  
  [ 8056.257467] sd 0:0:0:0: [sda] Preferred minimum I/O size 4096 bytes  
  [ 8056.257470] sd 0:0:0:0: [sda] Optimal transfer size 33553920 bytes not a  
  multiple of preferred minimum block size (4096 bytes)  
  [ 8056.286832]  sda: sda1 sda2 sda3 sda4  
  [ 8056.286968] sd 0:0:0:0: [sda] Attached SCSI disk  
    
  usb-c sata adapter:  
  :read !dmesg  
  [  933.693549] usb 7-1: new SuperSpeed USB device number 3 using xhci_hcd  
  [  933.705366] usb 7-1: New USB device found, idVendor=174c, idProduct=55aa,  
  bcdDevice= 1.00  
  [  933.705370] usb 7-1: New USB device strings: Mfr=2, Product=3,  
  SerialNumber=1  
  [  933.705373] usb 7-1: Product: Ugreen Storage Device  
  [  933.705375] usb 7-1: Manufacturer: Ugreen  
  [  933.705378] usb 7-1: SerialNumber: 0219112201A7  
  [  933.706581] scsi host0: uas  
  [  933.707261] scsi 0:0:0:0: Direct-Access     Samsung  SSD 870 EVO 500G  
  0  
  PQ: 0 ANSI: 6  
  [  933.708870] sd 0:0:0:0: [sda] 976773168 512-byte logical blocks: (500  
  GB/466 GiB)  
  [  933.708945] sd 0:0:0:0: [sda] Write Protect is off  
  [  933.708949] sd 0:0:0:0: [sda] Mode Sense: 43 00 00 00  
  [  933.709056] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled,  
  doesn't support DPO or FUA  
  [  933.732720] sd 0:0:0:0: [sda] Preferred minimum I/O size 512 bytes  
  [  933.732723] sd 0:0:0:0: [sda] Optimal transfer size 33553920 bytes  
  [  933.753451]  sda: sda1 sda2 sda3 sda4  
  [  933.753663] sd 0:0:0:0: [sda] Attached SCSI disk  
    
  Given that the drive is slower than either interfaces the usb version  
  shouldn't make a difference ... or does it?  Looking at the optimal transfer  
  size 33553920 bytes, I would suspect that there isn't a difference but I  
  have  
  to wonder about the "not a multiple of preferred minimum block size (4096  
  bytes)" on the usb-a adapter makes me a tad wary.  
    
  Writing a huge file - perhaps a slackware-current iso? - ought to settle the  
  issue but my hunch is that if there is a difference then the usb-c sata  
  adapter will be the winner.  The output itself inspires greater confidence.  
    
  ÇÇÇÇÇÇÇÇ ÇÇÇÇÇÇÇÇÇÇ,  
  Maurice  
    
  -o   -o    o-   o-  -o    o-   o-   o-   o-   o-   o-  -o  
   (\\   (\\  /)   /)    (\\  /)   /)   /)   /)   /)   /)    (\\  
   ^^   ^^  ^^   ^^    ^^  ^^   ^^   ^^   ^^   ^^   ^^    ^^  
  ... DeaÇÇ biÇÇ sella eorla gehwylcum ÇÇonne edwitlif.  
      Death is better for any warrior than a life of disgrace.  
  --- GNU bash, version 5.3.9(1)-release (x86_64-pc-linux-gnu)  
   * Origin: Little Mikey's Brain - Ladysmith BC, Canada (1:153/7001)