The LSI PCI-SV92EX Soft Modem is a modem that uses the PCI (Peripheral Component Interconnect) interface to connect to a computer's motherboard. The term "soft modem" refers to a modem that relies on the computer's CPU (central processing unit) to handle some of the modem's signal processing tasks, as opposed to a hardware modem that has dedicated components for those tasks. Soft modems are generally cheaper but may require special drivers and software to work properly.

The LSI PCI-SV92EX is a model of soft modem produced by LSI Logic (now part of Broadcom). It's typically used for dial-up internet connections, though these are now mostly obsolete compared to modern broadband options.