The sound card is a Realtek ALC3235 cf : http://www.dell.com/support/manuals/us/en/19/latitude-e7470-ultrabook/Late_E7470_OM/Audio-specifications?guid=GUID-EE1BF4E5-7FF1-4415-A32D-B8FE54B2D639&lang=en-us
The sound card is a Realtek ALC3235 cf : http:// www.dell. com/support/ manuals/ us/en/19/ latitude- e7470-ultrabook /Late_E7470_ OM/Audio- specifications? guid=GUID- EE1BF4E5- 7FF1-4415- A32D-B8FE54B2D6 39&lang= en-us