Message: "[E3 Hardware] DSP-USB Hardware failed to open or be detected"
Explanation: Disrupted information flow between computer - control unit.
Action 1: Close software > Unplug USB cord from both ends (computer & control unit) > Replug USB > Open software > Check for error.
Action 2: Check drivers. Open Windows Start > Control Panel > Device Manager > Ports tab > Check for "other devices" > Right click > Update Driver Software > Browse My Computer > Browse for C:\Multifocal -or- C:\Multifocal Espion USB Drivers > Next > Close.
Control Unit is the unit to which the amplifier connects.
Drivers allow computers to communicate with hardware.