When we looked at the results from the KIRA questionnaire it was obvious that most of you preferred USB as the means to power integration modules. The problem for ourselves is that the 5v produced by the USB does not provide overall voltage to effectively drive the infrared emitters, particularly the high power wand options. We're pleased to say that we've now solved this problem and can offer a USB power cable option for all KIRA modules! The KT9USB cable contains step-up voltage conversion to ensure the KIRA has enough power to operate everything correctly. In stock now..