Question about HP 250 G5

The quick link to the HP page says yes: https://support.hp.com/us-en...
I have not opened the model myself (many screws), but see the largest of the linked documents (Maintenance and Service Guide). Since an m.2 is installed, there should still be room for an additional 2.5" HD (p.31). However, you still need a "Hard Drive Spare Kit" (p.35) for connections and mounting.