Daughterboard

A daughterboard, daughtercard, mezzanine board or piggyback board is an expansion card that attaches to a system directly. Daughterboards often have plugs, sockets, pins or other attachments for other boards. Daughterboards often have only internal connections within a computer or other electronic devices, and usually access the motherboard directly rather than through a computer bus.

COMMONLY FOUND IN

COMMON METALS
Gold, silicon