Cheap C-Media (?) sound card

This USB sound card that presents itself as C-Media is one of the cheapest sound cards available with price $1.1-$2 depending on vendor. Device markings: HX2010-0705, production date 40th week of 2013 (or later?). Device enumerates as composite device: sound card + HID input. HID input part is used for audio volume and mute control and it functionality is slightly broken - same as with multimedia keyboard i ...

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