Insignia, Portable Speakers, models:

NS-2908 - 2.0 Portable USB Speaker System 2 PC	User Manual
NS-BT400 - 2.1-CH Wireless Speaker Sys	User Manual
NS-SP01-BL-C	Quick Setup Manual
NS-SPBTBRICK2	Quick Setup Manual
NS-SPKBAR	(French) Manual De L'Utilisateur