Konica Minolta bizhub C35 Reference Manual page 325

[MIFARE Settings]
Specify MIFARE settings. This menu item appears only if the loadable
driver supports MIFARE.
When a setting on this page is changed, the card information saved on
the printer is erased.
The [Security] - [Authentication Device Settings] - [MIFARE Settings] page
allows you to configure the following items.
Item
[Key 1]/ [Key 2]
[Key Type]
[ID Block Number]
8-58
Description
Key for accessing data on the card
Default: [0]
Select the key to be used for access.
Default: [Key 1]
Block number for the user ID on the card
Range: 0 to 255
Default: [0]
Configuring the Printer