Wireless adapter turns off when ethernet cable is attached

Hi there,

Like the subject says, whenever the ethernet cable is plugged in, the wifi adapter disconnects and the wifi active light above the keyboard goes out. As soon as I remove the ethernet cable, the wifi light comes back on and the wifi connect re-connects.

Does anyone have any thoughts on what is controlling this? I've looked at the driver properties for both the LAN and wifi adapters and in the BIOS and I can't seem to locate where to turn this 'feature' off.

M6800
A10 BIOS
Intel I17-LM Ethernet adpater
Dell 1505 Wireless adapter