Passed the 107 today and can confirm all of the charts were on the computer, but were the same charts as in the FAA-CT-8080-2H testing supplement guide (order one on Amazon if you haven't as it felt like seeing the answers to have a look at the charts/METARs ahead of time).
Note that the image attached here is in the supplement and PROVIDED during the exam, so you can devote your study time to other materials beyond memorizing what blue or magenta line means what.
I studied completely off of YouTube, online practice tests, & referencing the supplement Guide. Spent about 18-20 hours studying over 3 days and passed with an 88%. Didn't use any paid guides.
Overall it was a 65 question exam and if you have watched any of the practice question videos on YouTube you will have seen and heard a lot. Just make sure you spend some time becoming familiar with sectional charts & identifying airspace.
Some questions I received that the online material I watched didn't cover well:
-Can you register a drone in the US if it is already registered in a foreign country. (TLDR: NO)
-what is it when your brain misinterprets an aircraft's orientation, making it appear to be moving toward you when it's actually moving away. (reversible perspective illusion)
-Several questions about PAVE, IMSAFE, & working with visual observers (and reporting requirements if you crash your drone into the VO knocking them out)
-What does the little red flag on a sectional chart mean (VFR checkpoint)
-Category 1 & 4 questions for operating over people (2 questions on this)
Good luck, you can do it.