I already have the Logitech EX 110 keyboard+mouse combo, but i want to replace the mouse, since it does NOT have standby or on/off button. Now, i found this: http://www.amazon.com/Logitech-LX5-Cordless-Optical-Mouse/dp/B000BFO320/ref=sr_1_41?ie=UTF8&s=pc&qid=1240427032&sr=1-41 Logitech LX5 mouse, but i'm wondering if i can ONLY use the mouse withOUT the USB receiver. If not, which wi-fi mouse would work with the EX 110's receiver?