Technical information

Features of Your PowerBook 21
™
External monitor port
Connect to any external monitor or projection device that uses a VGA-style connector or to
any older Macintosh monitor using the video adapter included with your PowerBook.
Æ
TV out port
Connect your PowerBook to a television, VCR, or other video device. You can use TV out
for presentations or to play DVD-Video on your television.
G
Ethernet port (10/100 Base-T)
Connect to a high-speed 10/100Base-T Ethernet network or connect to another computer
and transfer files.
Infrared window
Use infrared (IR) communication to send files to another IR-equipped computer, print on
an IR-equipped printer, or connect to an IR network that uses the IrDA standard. You can
also use IR to synchronize with certain handheld personal assistants and cellular
telephones.
PC Card slot
Expand the capabilities of your PowerBook using this Type II PC Card slot that supports
both PCMCIA and CardBus formats.
W
Internal modem port
Connect a standard phone line directly to the internal modem.
PowerBook reset button
Reset the computer with this button when you cannot shut it down using the Power
button.
√
Sound input port
Connect an external line-level microphone or other sound input device.
-
Sound output port
Connect external speakers, headphones, or other sound output device.
Two FireWire ports
Connect digital video and other high-speed external devices, such as digital video cameras,
printers, and external storage devices.
Two USB (Universal Serial Bus) ports
Connect additional equipment to your PowerBook, such as printers, external storage
devices, modems, keyboards, and joysticks. Up to 127 devices can be connected at the
same time using USB hubs.