Serial ports (COM ports) or USB ports.
Historically, modems were connected to:
- Serial ports (COM1, COM2, etc.): Using RS-232 or RS-232C connectors.
- Parallel ports (LPT1, LPT2, etc.): Less common.
Nowadays, modems are often connected to:
- USB ports: Using USB-to-serial adapters or built-in USB modems.
Some modems may also connect via:
- Ethernet ports (RJ-45): For broadband or network connections.
- PCI or PCIe slots: For internal modems.
However, traditional dial-up modems usually require serial or USB connections.
