Dell MMS 5650 Home Theater Speaker System 5.1 Surround Sound

Dell MMS 5650 Home Theater Speaker System with 5.1 Surround Sound. Mini plugs connect to PC sound card and an adapter is included to integrate the sound and plug into a headphone jack in any other device. I have used it with my iPhone with another little adapter from headphone jack to lightning connector (not included.) It sounds great despite the deficits listed below. Well, call it 4.1 because the right rear speaker is not playing. The speaker seems to be good—I did a battery test and got sound and I got 5 Ohms with a multimeter. I know it is getting power because it hums when plugged into the system and music is playing. The center speaker stand is missing—I had the speaker attached to a computer monitor and must have misplaced the stand.