Brother HL-2400C Service Manual page 19

PCMCIA Card Slot
The printer has two PCMCIA card slots (Type II cards: 2 slots
available, Type III cards: 1 slot available). The following cards can be
installed;
PCMCIA-compatible flash memory card
HDD card
PCMCIA Fax Modem card
Saving User Settings
It is possible to operate the printer differently from other users with the
panel button settings. Two sets of user settings can be stored.
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