computer slots and ports
Swivel Tray Table | eBay
UC-4434A-I-T: Arm Cortex-A53 quad-core 1.6 GHz industrial computer 2 Ethernet ports, 4 serial ports (2 with 2-kV isolation), 2 CAN ports, 4 DIs, 4 DOs, 2 expansion slots (for Wi-Fi 6E and LTE modules), -40 to 70°C operating temperature.
Computer port (hardware)
For software communication ports, see Port (computer networking).
Expansion card - Wikipedia
This document provides an introduction to computer hardware components. It discusses the processor, RAM, motherboard, hard disk, video cards, ports, BIOS, peripherals, cabinet, and troubleshooting.