IBM 560 - Manual (Page 61)

Infrared (IR) Subsystem
The IR subsystem of ThinkPad 560 is designed to be compatible
with the IrDA** Serial Infrared Physical Layer Link Specification
Version 1.0 and Data Link Specification Version 1.0.
The IR subsystem of ThinkPad 560E is designed to be compatible
with the IrDA** Serial Infrared Physical Layer Link Specification
Version 1.0 or 1.1 and Data Link Specification Version 1.0.
System Settings
The I/O address can be selected from the following with the system
utility program. The IR subsystem uses one serial port address.
PCMCIA Subsystem
The system board has two 68-pin PCMCIA (Personal Computer
Memory Card International Association) slots that support three
different types of PC cards: Type I, Type II, and Type III PC cards.
The Type I and Type II PC cards can be installed into either the
upper or the lower slot, or into both slots at the same time. The
Type III PC card, however, must be installed only in the lower slot.
The Type II PC card cannot be used in the upper slot when a Type
III PC card is used.
The PCMCIA slots are designed according to the following PCMCIA
standards and specifications:
I/O Address
03F8–03FF Serial port 1 (Default)
02F8–02FF Serial port 2
03E8–03EF Serial port 3
02E8–02EF Serial port 4
ThinkPad 560/560E Subsystems 3-7