Such boards include Sound Blaster PCI64 (April 1998), PCI128 (July 1998) [ THIS CARD ], Creative Ensoniq AudioPCI, Vibra PCI and Sound Blaster 16 PCI. Analog interfacing is done by a codec chip, which runs at a fixed sampling frequency of 44 (Ensoniq Audio PCI) or 48 kHz (Creative's versions).
eBay