A baseplate holder for conveniently securing a mother board on a baseplate has a -shaped profile, the top face thereof being formed with a hook or a threaded hole, both vertical sidewalls being each provided on the end with a horizontal projection for insertion into the respective stamped hole on the baseplate. If a threaded hole is formed on the top face of the holder, the edges of a hole formed on the respective vertical sidewall can be formed with at least a tongue extending inwardly to support the screw passing through the threaded hole.