Jeesh, you are hard to convince!
Yes, of course I am! I am very
curious as to just what is going on here.
Yes, it has been modified to include the 0.1uF cap to provide a direct AVR reset pulse on a pin from the module. As it clearly states, it will work with 'barebones' set ups without the need to do the manual reset.
The module you cite is fascinating, since according to the illustrations, it has no
visible differences to the one the same seller is offering (for a somewhat lower price) apart
from what appears to be a label declaring "AUTO-RESET-READY" stuck over the four terminations for DTR, DSR, RTS, CTS. No such capacitor visible
Am I to therefore to gather (since the opposite side of the board is not revealed) that he has modified these by cutting the track to the reset pin on the CP2102 and wired this extra capacitor on the back
of the board between DTR and the "RST" pinout?