This document discusses various ports and connectors used in computing. It describes common motherboard ports like PS/2, serial, parallel, VGA, DVI, USB, LAN and modem ports. It provides details on connectors for these ports and example devices that can be connected to each port. It also covers external ports and connectors like FireWire, HDMI and mini-DINs. The document includes questions to test the reader's understanding of ports and connectors.