Hi! I'm sorry to be bothering you with this, but could you recommend a product or products judging from my problem?

1. Ever heard of Yes 4G? Well, I'm using a "Yes Go" device to connect to the internet. It's essentially a USB thumb drive-like device that acts as the modem and antenna.

2. The problem is, it's not receiving a signal indoors. My computer is a few meters away from the window, so I'm using a 3-meter USB extension to get a little bit of signal for the device near the window (the window is metal-grilled). The signal is weak and sometimes unstable, not to mention there's the limited-power issue.

3. Interestingly, there seems to be a hidden compartment in the device that has what I believe to be 2 U.FL ports. I wonder if I can make use of it...

So, do you think you have something I can use to help me get a decent signal? Thank you...