Laptop Indicator Light Identification?

[PsycoBoost]

There are nine indicator lights on my laptop by Toshiba. I know what all but one does. There are nine total. I wanted to know what the sixth one does. Here is the order they are in all side by side.

 

 

Charging, Power, Battery, HDD, SD Card, Wireless Com, ????, FN Key, Keypad

 

I dont know what that sixth one does. the icon by the light looks like mobile data almost. I have never seen it light up before. I even checked the use manual and where it tell you what all the indicators are and what they indicate, the manual shows all but the sixth one. I really think it is mobile data though, kinda like a cell phone. Its the Toshiba Satellite T115-S1100. If anyone knows for sure that would be cool, but suggestions would be awesome too. Thanks

[RichardsD]

It's cellular data.  I am assuming most regions don't have a SIM card slot, so that's why it wouldn't be labeled.  

[PsycoBoost]

It's cellular data.  I am assuming most regions don't have a SIM card slot, so that's why it wouldn't be labeled.  

Thank you.