The Flex-XL PIM paper input module is the same as the standard paper module. The only difference is that the two bulk trays are replaced by Flex-XL trays. A Flex-XL tray can contain media until media size 350 mm x 500 mm. The minimum media size 208 mm x 203 mm.
You can install the Flex-XL PIM instead of a standard paper module or in combination with a standard paper module. You can install a maximum of 3 paper modules. The configuration with a Flex-XL PIM does not have to contain a standard paper module.