For instance, I have two nearly identical Sandisk Cruzer Blade USB drives, one 4 GB and other 8 GB. (The output of lsusb is the same for both: Bus 001 Device 009: ID 0781:5567 SanDisk Corp. Cruzer Blade). On Linux, one is displayed with the flash drive icon and other with the generic USB storage icon. Sometimes a third, purple icon is used too.
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