Apple Macintosh PowerBook 1400 - Manual (Page 37)

Using PC Cards (PCMCIA cards)
PC Cards (also known as PCMCIA cards) are about the size of a thick credit
card and have a 68-pin connector at one end. They come in many varieties,
such as fax/modem cards, mass-storage cards, Ethernet connection cards, and
wireless communication cards. You can use PC Cards to expand your
Macintosh PowerBook’s capabilities.
This section tells you how to insert and eject PC Cards and provides
examples for setting up your communications software with a PC Card
modem. For information on using PC Cards, see the “Using PC Cards” topic
area of Mac OS Guide, available in the Guide (h) menu.
Inserting a PC Card
Your Macintosh PowerBook has two PC Card slots: an upper slot and a lower
slot. You can insert a card into either slot, or you can use both slots
simultaneously.
There are three types of PC Cards. The different types refer to the thickness
of the card. A Type I card is 3.3 millimeters (mm) thick, a Type II card is
5 mm thick, and a Type III card is 10.5 mm thick. Make sure you check the
documentation that came with your PC Card to verify that it is compatible
with your Macintosh PowerBook.
You can place a Type I or Type II card in either the upper or lower slot. You
can place a Type III card only in the lower slot. When a Type III card is in the
lower slot, you cannot use the upper slot. You may find it useful to get in the
habit of always using the lower slot to make sure the card you are using is
properly inserted.
IMPORTANT You cannot use an SRAM storage card (also called a flash RAM
card) as a startup disk on your PowerBook. Use SRAM cards for extra storage
only. If you try to use this type of PC Card to start up the computer, you’ll see
an error message. If this occurs, remove the SRAM card before you restart
the computer.
37 Using Expansion Bay Modules and PC Cards