This circuit board is for a Klipsch ProMedia 2.1 computer speaker amplifier. It is known as the I/O board. Condition is "Used". Shipped with USPS First Class. This is for the second generation version of Klipsch’s ProMedia 2.1 system. This second generation version was produced from approximately 2012 to 2018. That system no longer had a power switch (rocker type, which the first generation had) on the amplifier panel, but still used a mini-DIN jack to connect the volume control pod to it.