Software Update: USB Drive Letter Manager 5.5.4

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Version 5.5.4 of USB Drive Letter Manager has been released. This versatile program manages USB devices. For example, it is possible to assign drive letters only when a medium is inserted in the drive, which is useful for multicard readers. It can also be specified which drive letters may or may not be assigned, depending on the type of USB device, the size of the drive, the USB port used and the name of the volume. In addition, the application indicates by means of a speech bubble in the system bar which device or volume has been added to the system with which drive letter. More information can be found in this manual are being found. USB Drive Letter Manager is free for private and educational use, but companies and organizations are required to pay a fee. The following issue has been fixed in this release:

Bug fix:

  • Bugfix: USBDLM since V5.5.2 removed the drive letter of GPT partitions with the attribute in bit 63 set (GPT_BASIC_DATA_ATTRIBUTE_NO_DRIVE_LETTER, diskpart calls it “nodefaultdriveletter”). Now USBDLM just does not touch the drive letter of such volumes. As before you can let USBDLM ignore the attribute by IgnoreNoDefaultDriveLetterAttribute=1 in section [Settings]

The following downloads are available:
USB Drive Letter Manager 5.5.4 (zip)
USB Drive Letter Manager 5.5.4 (msi)
USB Drive Letter Manager 5.5.4 (64bit, zip)
USB Drive Letter Manager 5.5.4 (64bit, msi)

Version number 5.5.4
Release status Final
Operating systems Windows 7, Windows 8, Windows 10, Windows 11
Website USB Drive Letter Manager
File size


License type Freeware