From an ASUS rep: D2.5*2 (short screws)
All I have been able to find is this website but I don't think it's cheap for the U.S.
T5, the shorter screws from an email with a representative are: D2.5*2
It took me a bit of work to remove this cable, it was a hassle actually. What worked for me, without any tools, was to use your index and middle fingers' nails and pull it. That worked better than the index and thumb. Took me like 15 minutes, more than what it should take.