WCE-based HMI series (eTOP500, eTOP600) have 2 USB ports as shown in the image below.
A - Host USB interface 1.1/2.0
B - Host USB interface 2.0
NOTE: eTOP504/605 panel model have 1 Host USB interface 1.1/2.0
Linux-based HMI series (eX700, eXWare, eSMART) have 1 or more Host USB interface 2.0
All EXOR HMIs.