Apple MB871LL User Manual - Page 99

USB Specifications, FireWire Specifications, Two USB 2.0 ports on the Apple Keyboard

Page 99 highlights

 DVD±RW  DVD±R DL USB Specifications  Support for Universal Serial Bus (USB) 2.0 and 1.1  Seven external USB Type A ports  Two USB 2.0 ports on the front  Three USB 2.0 ports on the back  Two USB 2.0 ports on the Apple Keyboard  Each USB port (front and rear) is on a separate 480 megabit-per-second (Mbit/s) USB channel  500 milliamperes (mA) available for a total of 1.5 A on the rear and 1.0 A on the front FireWire Specifications  Four external FireWire ports: Two FireWire 800 ports (9-pin) on the front and two on the back  Data transfer speed: 100, 200, 400, and 800 Mbit/s Power  Output voltage: Approximately 12 V  Output power: Up to a maximum of 28 W for all 4 ports or 12 W for any one port Chapter 5 What's Under the Hood 99

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Chapter 5
What’s Under the Hood
99
Â
DVD±RW
Â
DVD±R DL
USB Specifications
Â
Support for Universal Serial Bus (USB) 2.0 and 1.1
Â
Seven external USB Type A ports
Â
Two USB 2.0 ports on the front
Â
Three USB 2.0 ports on the back
Â
Two USB 2.0 ports on the Apple Keyboard
Â
Each USB port (front and rear) is on a separate 480 megabit-per-second (Mbit/s)
USB channel
Â
500 milliamperes (mA) available for a total of 1.5 A on the rear and 1.0 A on the front
FireWire Specifications
Â
Four external FireWire ports:
Two FireWire 800 ports (9-pin) on the front and two on
the back
Â
Data transfer speed:
100, 200, 400, and 800 Mbit/s
Power
Â
Output voltage:
Approximately 12 V
Â
Output power:
Up to a maximum of 28 W for all 4 ports or 12 W for any one port