I am currently trying to setup up two FLEX-ADMP441 MEMS microphones with an EVAL-ADMP441Z and an SDP-B. Upon plugging the USB into my PC, the device manager shows that the eval kit is not being recognized as an audio source, instead it is an unknown device. There isn't much documentation online as to how to troubleshoot this issue. I'm running Windows 7 Enterprise in the lab and I believe the board setup is correct. I do not have a jumper on J8 but I do on J9 and the microphones are enabled. Has anyone had this issue?