Apple Macintosh LC 630 DOS - Manual (Page 155)

If your computer does not already have a SIMM installed on the
DOS-compatibility card, you can add a SIMM that provides up to 32 MB
(megabytes) of RAM for the exclusive use of your PC. The SIMM that your
card uses is the same type of SIMM that your computer uses. Follow the
instructions in this appendix to install a SIMM.
Cards fit into slots on the computer’s logic board—the board that holds the
components that make your computer work. There are three types of slots on
your computer’s logic board, each labeled on the board:
m a communication slot for an internal modem or an Ethernet card
m a video-in slot for a card that brings signals into the computer from a
videocassette recorder (VCR), laserdisc player, video camera, or similar
equipment
WARNING To avoid damage to your computer, Apple recommends that
only an Apple-certified technician install additional RAM. Consult the
service and support information that came with your Apple product for
instructions on how to contact an Apple-authorized service provider or
Apple for service. If you attempt to install additional RAM yourself, any
damage you may cause to your equipment will not be covered by the
limited warranty on your computer. See an Apple-authorized dealer or
service provider for additional information about this or any other
warranty question.
144 Appendix B