USB Attached SCSI (UAS) (USB Devices) reporting incorrect speed

[ajs6000]

When attaching USB 3.0 drive that supports UASP the drive speed is reported as USB 2. As USB 2 tops out at 60MBs and this drive is benchmarking at 260MBs then I assume this is incorrect. If I use a non UASP device the correct speed is shown.

 

Please see attached jpg.

[Fiery]

What is the device that you used for that test?

Thanks,

Fiery

[ajs6000]

Hi

 

The USB controller is a NEC - µPD720202 connected to a Samsung 840 EVO 120GB in a Startech S2510BPU33 UASP external case.

 

Let me know if you need any other info.

 

Many thanks

 

Adrian

[Fiery]

We've got a S2510BPU33 box today, and connected it to an Etron USB 3.0 controller.  The information reported by AIDA64 on its  Devices / USB Devices page looks like this:

  [ USB Mass Storage Device (USB3.0 Device) ]

    Device Properties:
      Device Description                                USB Mass Storage Device
      Device ID                                         174C-1053
      Device Class                                      08 / 06 (Mass Storage)
      Device Protocol                                   50
      Manufacturer                                      Generic
      Product                                           USB3.0 Device
      Serial Number                                     AC0000000001
      Supported USB Version                             3.00
      Current Speed                                     Super  (USB 3.0)

I think in your case the SATA-to-USB 3.0 bridge chip of the box (ASMedia ASM1053) may be having an issue with the NEC USB 3.0 controller, and that's why it switches down to USB 2.0 mode.

 

Regards,
Fiery

[Cleanhead]

i am not sure if this is related but, the version posted on the screenshot here is kinda old: 4.30.2900

 

could it be that the newest beta 4.50.3029 fixes this?

[Fiery]

No, since we haven't fixed anything related to USB devices detection since v4.30.2900.