We developed the USBIR6 with the USBUIRT developer. We had dealers that wanted a PC "appliance" that did cool automation. The USBIR6 was part of that package. It's nice because of the 6 discrete zones of IR, and the IR input, that fits within the PC itself so less labor in cables and less issues with things getting unplugged.
As Dave mentioned, we have devices in stock and know that good IR support is still needed.