The primary computer equipment. Housed in a desktop or floor-standing cabinet, it contains such components as the motherboard, CPU, RAM and ROM chips, hard and floppy disks and several input/output ports.
"system unit." YourDictionary, n.d. Web. 16 August 2018. <http://www.yourdictionary.com/system-unit>.
system unit. (n.d.). Retrieved August 16th, 2018, from http://www.yourdictionary.com/system-unit