The Multi-Tech Communications Port typically refers to a communication device (such as a serial modem or gateway device) manufactured by Multi-Tech Systems, a company known for providing communication solutions. The specific driver you're referring to would depend on the exact model of the device (e.g., a Multi-Tech modem, router, fax server, or gateway). Multi-Tech devices are often used for serial communication, remote monitoring, faxing, or broadband communication.
If you're trying to install a Windows driver for a Multi-Tech Communications Port