USB Attached SCSI (UAS) Mass Storage Device Drivers Up to Date

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rtflddgr21

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Jun 14, 2017
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I have a 1tb Silicon Power external hard drive. I have Windows 10. Two days ago, it was working fine. I tried to plug it in yesterday and it does not show up under My PC. It shows up in the Device Manager under Storage Controllers, instead of under Portable Devices like my other external hard drives. It also does not show up under Disk Management. The light on the device lights up and I can hear it spin up. Under Devices and Printers it shows up as the Usb Attached scsi (uas) Mass storage device which it did not do previously. Before yesterday, I had never even heard of the usb attached thing. I have had the drive for approximately 2 years.
 
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marksavio

marksavio

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UASP is almost like having your external USB drive attached as SATA drive.
* has max read/write speeds of 400~500Mbps
* you can save around 80% more energy compared to a USB 3.0 drive.
* will also sleep, suspend, shutdown, startup with your PC
 
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marksavio

marksavio

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Dec 23, 2017
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what do you mean by info? what kind of info are you looking for?
you can use tools like HWInfo. or CrystalDiskMarkInfo. or just simply go to the Device Manager and click on the driver properties of the drive.

what is your problem rn exactly? i thought you were just confused what a UASP storage is.
 
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rtflddgr21

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Jun 14, 2017
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My problem is the for the last two years this drive was a regular standard external hard drive, not a uasp storage device. I have 800+gbs of files stored on it that I can't access. As I explained, when I go to the device manager, my only options are uninstalling the device which I have tried and it didn't help, and updating the driver, which I also tried and it didn't help. I don't know why the sudden change to uasp.
 
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marksavio

marksavio

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what is the motherboard of your current PC right now? you may have connected your drive to a USB3.0 Superspeed port. have you tried reconnecting to another USB 3.0 port?

just detach your drive. press winkey+s. type "cmd". press ctrl+shift+enter. type "set devmgr_show_nonpresent_devices=1".
go to device manager. view menu. show hidden devices. uninstall and delete the UASP driver in your storage controllers. and restart.
 
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rtflddgr21

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Jun 14, 2017
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The model number of the motherboard is 98QNNX1. I tried that before, several times. When I plug the drive back it, it registers as the UASP instead. I have tried it in all of my usb ports. In one usb port, the light on the drive is red, when I try the other two, the light is blue.
 
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marksavio

marksavio

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im not familiar with that motherboard? are you using a laptop then? what model is it?
you will probably need reinstall the chipset driver from your laptops support site and make sure that UASP driver is deleted as well before you decide to reattach your drive.
 
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Alabalcho

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Jan 13, 2011
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If your drive is appearing in "Storage Controllers" only, and not in Disk Administrator, this means that
- the USB part of it is working
- the SATA part is not

Try connecting this drive to another USB port / another computer. It might be lacking power to rev the disk up. As a last resort - open the drive, if you're lucky you will find standard SATA drive interface inside, where you can plug it into standard desktop SATA interface.
 
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aymantarek436

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May 28, 2018
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For me, I have the same problem but when I connect it to my brother's laptop it works fine. It started with: The ext HDD was plugged into a USB 3.0 port. then I plugged in USB Flash Drive to another USB 3.0 port then both of Flash Drive and External HDD weren't responding, then I plugged out both and tried to connect the External HDD it didn't work and shown as USB Attached SCSI (UAS) Mass Storage Devic, but the USB Flash Drive works well. So, I think the problem is from the windows and not the mobo.
 
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