Have Optiplex 3020 MT service tag
<Service tag removed>
and getting message
QUOTE
Audyssey
This device is not supported
Realtek HD Audio Manager
UNQUOTE
Internal speaker working OK but headphones and external speakers not working
Dell manual says Intel Realtek ALC3220 High Defination Audio is installed
Driver updated by windows device manager to
Real Semiconductor
22/09/15
version 6.0.1.6086
All help welcomed