Hi
I found the manual for your tablet here:
http://dlcdnet.asus.com/pub/ASUS/EeePAD/TF300T/TF300T_MANUAL_en_20120423.pdf
It is in pdf format and can therefore be saved to computer for future reference. Searching through the manual there was no reference to "predictive" in the whole manual and searching "text" didn't give any indication that this facility is available on the machine as standard.
"Some" of the 2013 Models will, Most tablets will not...You can buy an Insert that has a Magnetic tip on the end, The cord has another magnetic tip. Simple stick together. It all depends on the type of charger Male end that goes into that paticular Model....