PCI slot card - Conexant - 56k data fax phone modem - 2x RJ-11 mic and speaker.

Vintage Desktop Computer Tower PC PCI Modem Card Adapter

PCI Modem Card - Conexant CX06834-11

Conexant 56K Dial-Up Fax Modem PCI Card RJ11 Phone Line CX11252-41Z Rev 2.2

Conexant RD02-D490 Internal Fax Modem Card 56K Data PCI 2-Ports for Computers

Vintage Desktop Computer PCI Modem Card Adapter