You beat me to it.... But, as far as I'm aware the WACOM won't work with this adaptor... You need a high speed adaptor from Keyspan for any Wacom and this is exactly what I use, and I use this exact same Wacom myself at home along with the Keyspan serial-usb adaptor.
http://www.amazon.com/Keyspan-Speed-..._tdp_sv_edpp_i