I have bought an internal drive (Seagate Barracuda with 5900 RPM) like the following one and want to connect it as an external drive. I also bought a UGREEN USB 3.0 to SATA Converter and a power supply with 12 Volt and 2 Amps.

The problem I am facing now is that the device manager on Windows sees the device as ASMT 2115 SCSI Disk Device but doesn’t connect it as a drive to my PC.

I'm using a Windows 10 system but also tried it on a Windows 7 system with the same result. Picture below:

  • Can you see your external HD in the list of available disks in Disk management? Oct 30, 2016 at 5:10
  • Yes. The only thing I needed to do was to set the drive letter. Nov 5, 2016 at 21:39

2 Answers 2


Assign a drive letter to your external drive.

Hit Windows Key + R type diskmgmt.msc and hit Enter

From there select your volume, right click it, and from the context menu Change Drive Letter and Paths.

Hit Change, Assign the following drive letter, select a drive letter and click OK.

Edit: As questioner added details, diskmgmt.msc had greyed out context menu, and couldn't change drive letters.

I later recommended to use Paragon HFS+ for Windows. Once installed, Paragon HFS+ for Windows provides a high-speed read and write access to Mac-formatted partitions just as if it is a native Windows driver.

  • That's not possible, see the image here, please. Oct 29, 2016 at 15:30
  • Use HFS as recommended here link
    – user345866
    Oct 29, 2016 at 15:35
  • @FranzHuber23 If the drive is HFs+ and somehow being used on a Windows system—and there is no need to retain data from that drive since it’s new/blank as far as the owner is concerned—then the solution is not to use Paragon HFS+ for Windows, but rather just repartition and reformat the drive. Oct 29, 2016 at 17:34
  • I only wanted to check the drive with Seagate Seatools but wasn't sure if it was connected in the right way. Oct 29, 2016 at 18:03

Your UGREEN USB 3.0 to SATA Converter probably broken. I own that also. While I was formatting one of my hard disk using UGREEN USB 3.0 to SATA Converter, it was interupted because sudden loss of the power supply. Next time i use the sata converter, its not working anymore.

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