I have an Asus CM1630 (https://www.cnet.com/products/asus-essentio-cm1630-athlon-ii-x2-220-2-8-ghz-4-gb-750-gb/specs/) and just ordered a ASUS PCE-AC55BT 802.11ac Wireless-AC1200 Bluetooth 4.0 PCIe / mPCIe adapter (https://www.newegg.com/Product/Product.aspx?Item=N82E16833320293&nm_mc=TEMC-RMA-Approvel&cm_mmc=TEMC-RMA-Approvel-_-Content-_-text-_-) and it requires me to plug in the F_USB for some sort of connectivity. I can't find or may not have a F_USB so if you know where it should be or know I don't have one is there any work around? Thanks.