My keyboard (IBM Model M, mfg: 3-14-94) followed by my case (a generic beige box from 1996) and monitor (Sony Trinitron G520, mfg: May 2000). Actually if you factor speakers into the equation, mine (four Sanyo SS 900s a pair of Sanyo 695s,, a pair of Sanyo SS 540s, and six Sanyo SX 802s) were manufactured between 1978-1991.