Support Information:
Device Type: Sound Card
Manufacturer: Realtek
Model: DynaBook Satellite 1870
Interface: Other
Operating System: Windows XP Professional
Age of Device: Not specified
FCCID:

Find it on DriverGuide (http://members.driverguide.com/index.php?action=srch&sm=b&aax=&qa6=&qa5=19&qa7=1500&dp=3&qm0=DynaBook+Satellite+1870&jmd=and&fzz=d) | Find it with Google (http://www.google.com/search?hl=en&lr=&ie=UTF-8&oe=UTF-8&q=Realtek+Sound+Card+Realtek+DynaBook+Satellite+18 70+Windows+XP+Professional+)

Toshiba USA and Toshiba Europe has no such model listed.

http://eu.computers.toshiba-europe.com/innovation/download_drivers_bios.jsp

http://www.csd.toshiba.com/cgi-bin/tais/support/jsp/home.jsp%3Fnav%3DDownload&ei=mJW0SciaHeGNmQepmdHOBQ&sa=X&oi=smap&resnum=1&ct=result&cd=1&usg=AFQjCNG1KVjeBcONZJPllLSiC_c198LDTw#

Recheck your model against the models listed on the manufacturers website. It looks like all Satellite model #'s begin with a letter.