Wireless Interference?

I don't know if anyone had this problem, but I haven't given it much thought until now. I have a USB dongle connected to the USB port on the left side of my MBP. I'm not sure which side the wireless adapter is located in the MBP, but there seems to be interference between the two as I just been having alot of problems connecting to my wireless network. Because of the lack of space on my desk, the left side of the MBP is facing toward a wall (parallel to it), so therefore the Magsafe, USB, and audio ports are facing toward the wall. I have not been able to even detect my wireless network until I decided to remove the USB dongle temporarily and rescan for wireless networks. It finally worked then! So, do you guys think there is a possibility the USB dongle is interfering with the wireless adapter built in MBP? If so, what can I do about it (the right USB port is powering a WD Passport because the left USB does not provide enough power)?

 

What kind of dongle is it? For a mouse/keyboard? Those tend to transmit at the same frequency the network does.

 

That's what I was thinking. I'm using the Logitech Cordless Desktop MX3200 Laser. I couldn't find the specific frequency though.