Yes Frank, they are dynamic with one exception. You can use Disk Management
module to assign a drive letter to a USB drive and Windows will remember
which drive letter to use for this particular USB drive. This is great when
used with batch programs and/or backup programs that depend on fixed drive
letter.The problem with this is that when this USB drive is removed, other
device, such as mapped drive or another USB drive can use the freed drive
letter which then may create problems when the original USB drive is
re-inserted, in which case this USB drive will not be visible.
Regardless if this drive letter is dynamic or not, this drive should be
sharable. I have tried it on my system and had no problem with either type.