Which of the following adapter cards allows I/O devices to be connected and transmits data using a POTS line?

A PCI tuner card receives RF signals for TV or radio reception and has no interface for a POTS telephone line.

A PCI modem converts digital computer signals to analog signals for transmission over a standard POTS telephone line. It physically plugs into a PCI slot and connects to a telephone wall jack via an RJ-11 connector, enabling dial-up internet, fax, and voice communication over the public switched telephone network.

A PCI SCSI card provides a host interface for attaching SCSI storage devices such as hard drives and tape drives, not telephone lines.

A PCI Ethernet card connects a PC to a LAN using an RJ-45 connector and operates over twisted-pair or fiber cable, not a POTS telephone line.