Earphone board set EP91

Listed on the following equipment:
Horizon - G7 - (FC203)
Matrix - Ascent Trainer - A3xe - 2012 - Silver (EP606)
Matrix - Hybrid Cycle - H7xi - 2015 (CB93 & EP614D)
Matrix - Hybrid Cycle Premium Series - H7x-01-G4 - 2009 (CB72 & EP91)
Matrix - Premium Series - U7x-01-G4 - 2009 - Silver (CB75 & EP91)
Matrix - U3xe - U3xe - 2012 - Silver (CB75B & EP604)
Matrix - U7x - U7x - 2012 - Silver (CB75B & EP91C)
Matrix - U7x - U7xe - 2012 - Silver (CB75B & EP92F)
Matrix - U7xi - U7xi-02 - 2015 - Silver (PCB92-US-F & EP614D)

* Images may not be identical to part.