Remote Control For Logitech Z5500 Z 680 Z 5400 Z 5450 HP Z 5500Z680 Z5400 Z5450 Digital THX 5.1 PC Multimedia Computer Speaker S|Remote Controls| - AliExpress
Logitech Z5400 DIGITAL Owner's Manual | Manualzz
Logitech Z-5450 Digital 5.1 Speaker System (970181-0403) : Electronics