The HSP56 (Host Signal Processing) AMR or PCI sound cards were very common in budget systems from the early to mid-2000s, often integrated directly into SiS or VIA chipset motherboards. Because they are legacy hardware, finding the correct driver can be tricky.

An excellent, enthusiast-curated repository dedicated exclusively to legacy PC audio, video, and modem hardware. hsp56 sound card driver link

DriverGuide hosts one of the largest repositories of vintage drivers. Search for "PC-Tel HSP56" or use the direct category links. The HSP56 (Host Signal Processing) AMR or PCI

Always run the driver installer as an administrator. hsp56 sound card driver link