What does FSDU stand for?Helpful Information / By Daniel Noakes What does FSDU stand for? A commonly asked question! www.abbreviations.com/FSDU lists no less than 12 meanings! Within the point-of-sale (POS) industry FSDU is used very commonly for both Free Standing Display Unit and Floor Standing Display Unit. Please see our main FSDU page for further information, or check our FSDU Glossary of Terms article.