KVM-TEC 6839 MVX-S Sound Option for MVX1, MVX2 or MVX1-F
This option has been with the product MVX1, MVX2 or MVX1-F ordered.
Also, you can order later:
You have to upgrade with actual Switching-Firmware (kvm-tec.com) and order together with the new ID-No. of receiver unit.
The ID No., you can get by re-power the receiver, type 5 x "Scroll_Lock" hotkey and "m".