I am not a Dell Employee
Dell forum member since 2002
Home Built PC with Gigabyte GA-Z77X-UD5H motherboard, i7 3770 CPU, Windows 7 64 bit Home/Win 8.1. SSD drive. Sonar X3c 64 bit Recordng Software.
Member of Nashville based R.O.P.E.
Report Unresolved Customer Service Issues here I do not work for Dell. I too am a user. The forum is primarily user to user, with Dell employees moderating.
Here is the download page for your driver:
The device is Soundmax made by Analog Devices
After you download it, it opens right up and says Soundmax. I have a 4550 as well and just did a reinstall. Sound works now.