After doing a lot of research, and spending over an hour trying to connect this device to a new Creative Sound Blaster X-Fi XtremeGamer card, I discovered on Creative's knowledge base that these two devices are not compatible. However, Creative doesn't disclose this anywhere - but strangely the device is compatible with Sound Blaster X-Fi XtremeGamer "Pro" card. Apparently, the non-Pro and non-X-Fi "X-Fi" cards only work with some strange mini optical digital-audio interconnect plug. This is simply the result of poor communication, zero documentation, and sloppy sales by Creative, Inc. If you're intending to use this device to connect an X-Fi card, check the newsgroups first because you probably won't get a straight answer from the product documentation or Creative's website. Overall, I was very disappointed with Creative, Inc. and this device is going back to Amazon.