Welcome, @Community member, to the community!
the inDART-STX was a tool from SofTec Microsystems, so you would have to get the associated software from there. If they were still available: it looks like this company is no longer accessible, its former website is for sale.
Maybe one of the community users is still able to provide a driver, but I highly doubt that there is one for newer Windows versions.
Good luck!
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/Peter
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