Technical information

Clock/calendar
m CMOS custom circuitry with long-life battery
s
Warning If the clock begins to keep time inaccurately, have an Apple-authorized dealer or service
provider replace the battery. The service provider will dispose of the battery according to the local
environmental guidelines. Do not attempt to replace the clock battery yourself. s
Keyboard
m Twentieth Anniversary Macintosh custom keyboard
m Two ADB connectors; one for the trackpad and one for adding a second device if desired
Trackpad
m Solid-state keyboard-mounted trackpad (ADB device); can be removed and repositioned
Interfaces
m Apple Desktop Bus (ADB) port supporting up to three ADB input devices (such as a trackball,
keyboard, or mouse) daisy-chained through a serial bus; additional ADB port on back of keyboard
m One internal expansion slot supporting 6.88-inch 15-watt PCI (peripheral component interconnect)
expansion cards. Install only expansion cards that come with Macintosh drivers and are compliant
with the PCI 2.0 standard. NuBus
™
cards cannot be used in this expansion slot.
m One internal expansion slot (comm slot II), supporting communication cards, such as an internal
modem or Ethernet card
m One internal video expansion slot supporting a video input card using the NTSC, PAL, and SECAM
formats (The video input card is already installed in this slot.)
m One TV tuner card that allows you to connect your computer to an external TV antenna or cable TV
service and FM radio antenna (The Apple TV/FM Radio System card is already installed.)
m Two RS-232/RS-422 serial GeoPort-compatible ports for printers, modems, LocalTalk network, or
other serial devices
Technical
Information
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