DB15 Female Welded Connector is the most common type of electrical connector. DB 15 connector is part of the D-sub miniature (D-sub) connector plug and socket family for computer and communication devices. DB-15 pins are arranged in rows of two, as one eight-pin row above a seven-pin row.
Applications:

Network ports.
Computer video output.
Game controller ports.
Linear and rotary encoders in industries.