I forgot about this yesterday.
The Sliger SM550 manual says it comes with three types of screws. Mine came with four (or five).
Normally I’d say “Extra screws are better than not enough screws.” And maybe Sliger ships the same multi-compartment baggy of screws with all their case models.
But the problem is, there’s at least one screw in the manual that matches no screw in the baggy. And that’s a problem.
Apparently other boutique PC cases have similar problems with incomplete or out of date manuals. If that’s true, Sliger gets no points for standing out from the crowd.