according to hp, it basically fits all probook 450s. however, hp has two connector diameters (4.5mm and 7.4mm, the probook should have a 4.5mm connector), digitec doesn't write (or i don't see) which diameter this power supply supports. on the picture it looks like a 4.5mm connector -> fits.

It should be noted, however, that the original hp power supply that digitec offers here is about twice as expensive as a replica.

Unfortunately, no idea, we have a pavilion.