Everything does FTP, nothing does AFP.
The 3225 doesn 't support SMBv2, only SMBv1, so I would not consdider it viable now. (The 3335/3345 does)
I don't believe the 3225 does scan direct to a USB stick
I am wondering to buy a personal MFP Laser Mono. By Xerox products, I'd hesitate betweend 3225 and 3335. Price is better with 3225 but scan seems to be better with 3335. I use MacOS, Ubuntu & Windows solutions.
I am interesting in scan solutions since I don't want to use software.. I want scan to PC but proper network solutions like AFP, NFS, SMB network shares onto HDD inside MFP, or to an USB key plugged to the MFP or directly to network shares. (Best would be to have all these possibilities). I know there is also scan to email. In fact i'd like to see configuration settings screen to have an idea about scan potential.
I used by the past Ricoh, Canon & Toshiba MFP products so I know much about hi-end network settings