The Epson B12B813391 Automatic Document Feeder is exclusively for the the Perfection 4490 Photo and V500 Photo scanners, and allows you to automatically load multi-page documents of up to 30 sheets (6mm of maximum stack height) into scanner.
Exclusively for use with the Epson Perfection 4490 Photo & V500 Photo scanners
Allows ~30 pages of auto loading, up to a 6mm maximum of stack height