Middelbaar Beroeps Onderwijs. (Middle Practical Education (for lack of a more suitable translation)).
MBO is very popular with people who have a MAVO diploma. Within MBO there are several tracks to follow. Including, but not limited to, computer science, photography, installation (of plumbing and such), and electronics.
These are all divided again in so-called "Middenkader opleidingen" (usually you end up in middle management with such a diploma) and "Basis beroeps opleidingen" (for those who actually want to work).