I have a question about upgrading the internal wifi card on my laptop. Right now it has an Atheros 2.4GHz wifi card with a single black wire attached. Is it possible to update this to a dual band wifi card so I can get the system running wifi at 5G instead of just 2G? I know I can just add a USB wireless dongle but would rather have it internal. The system is only USB 2.0 so I'm not sure if adding an external 5G device would help.