The ESS SuperLink-M Data Fax Voice Modem is a type of modem produced by ESS Technology. It supports data, fax, and voice communication, and it connects to a computer or laptop via a PCI or ISA slot (in the case of older systems), or sometimes a USB interface. The modem was typically used for dial-up internet connections, sending and receiving faxes, and making voice calls through a computer (voice-over-IP, voice mail, etc.).

To make the ESS SuperLink-M modem work on your Windows system, you need to install the appropriate Windows driver for it. This driver ensures that the operating system can properly recognize and communicate with the hardware, allowing you to use the modem for various purposes like faxing, dialing into a phone line, or using voice features.