The point at which a peripheral device attaches to or communicates with a computer or mobile device
1 Ports and Connections â¢ A port is the point at which a peripheral device attaches to or communicates with a computer or mobile device so that the peripheral device can send data to or receive information from the computer or mobile device Page 129 Figure 3-23 Copyright Â© Cengage Learning.2  All rights reserved. 3  31. Ports and Connections â¢ A port is the point at which a peripheral device attaches to or communicates with a computer or mobile device so that the peripheral device can send data to or receive information from the computer or mobile device Page 129 Figure 3-23 Copyright Â© Cengage Learning. 2  All rights reserved.