why X-CTU displayed Arduino Uno(COM*) not USB serial port(COM*)

I intended to connect the PC with XBee by XBee USB Adapter v2.0 with a mini-USB . after connecting,the X-CTU displayed Arduino uno(COM7) not USB serial port. so when i push the button called Test/Query , it failed!

XCTU is not recognizing the adaptor. It is separate from the Arudino. Did you install the drivers?