Apple MD772LL/A Personal Computer User Manual


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108 Chapter 5 What’s Under the Hood
USB Specications
 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back)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backand1.0Aonthefront
FireWire Specications
 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
Ethernet Specications
 IEEE802.3compliant
 Maximum cable length: 328feet(100meters)
 Connector: RJ-45for10Base-T,100Base-TX,and1000Base-T
 Media, 10Base-T: Category(CAT)3orhigherUTPon2pairsupto100m
 Media, 100Base-TX: CAT5eUTPon2pairsupto100m
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