You found 4 products in Sound Cards - ASUS

SDCD ASUS|XONAR U1 SILVR RT Sound Card
External, USB interface
2 store offers from £48 - £63

ASUS Xonar U1 Sound Card
External, 7.1 Channel Surround, USB interface, 48 kHz
1 store offers from £48 - £48

ASUS XONARD2 Sound Card
Plug-In Card, 7.1 Channel Surround, PCI interface, 192 kHz
1 store offers from £90 - £90

ASUS XONARD2XXDT Sound Card
PCI interface
1 store offers from £112 - £112