remove the drive letters of card readers until you insert a card.assign letters for a specific USB drive by putting an INI file on the drive.assign a letter from a list of new default letters, also dependent on many different criteria as the active user, drive type, connection (USB, FireWire), USB port, volume label, size, and others.

It automatically solves conflicts between USB drives and network or subset drives of the currently logged-on user.įurthermore, you can define new default letters for USB drives and much more. Running as a service makes it independent of the logged-on user's privileges, so there is no need to give the users the privilege to change drive letters. USB Drive Letter Manager (USBDLM) is a Windows service that controls Window's drive letter assignment for USB drives.