Sangoma S518 ADSL card. Old, but was used by VOIP providers, I believe. Worked last I used it many years ago. Has a telephone cord jack where you put your phone line, and you can then get ADSL connection without an ADSL modem, etc.
https://scottstuff.net/blog/articles/2005/02/11/sangoma-s518-pci-adsl-modem-review/
https://support.digium.com/s/article/Telephony-Cards-S518-Installation
Cash only.