Apple Imac Mid2011 User Guide

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Chapter 4      Problem, Meet Solution
If	only	one	IP	address	is	provided, 	then	you	must	have	a	router	capable	of	sharing	the	
connection, 	also	known	as	network	address	translation	(NAT )	or	 “IP	masquerading.”
For	setup	information, 	check	the	documentation	provided	with	your	router	or	ask		
the	person	who	set	up	your	network. 	
An	AirPort	base	station	can	be	used	to	share	one	IP	address	among	multiple	
computers. 	For	information	about	using	an	AirPort	base	station, 	see	Help	Center		
(click	Help...

62Chapter 4      Problem, Meet Solution
Keeping Your Software Up to Date
When	you’re	connected	to	the	Internet, 	Software	Update	checks	periodically	to	see	
if	updates	are	available	for	your	computer. 	You	can	download	and	install	these	free	
software	versions, 	drivers,	and	other	enhancements	from	Apple. 	
You	can	set	how	frequently	your	iMac	checks	for	updates	in	Software	Update	
preferences. 	To	check	manually, 	choose	Apple	()	>	Software	Update. 	For	more	
information	about	Software	Update, 	see...

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Chapter 4      Problem, Meet Solution
Onscreen Help
You	can	often	find	answers	to	your	questions, 	as	well	as	instructions	and	
troubleshooting	information, 	in	Help	Center.	Choose	Help	>	Help	Center.
System Information
To	get	information	about	your	iMac, 	use	System	Information.	It	shows	you	what	
hardware	and	software	is	installed, 	the	serial	number	and	operating	system	version, 	
how	much	memory	is	installed, 	and	more.	To	open	System	Information, 	choose	
Apple	()	>	About	 This	Mac	from	the	menu...

64Chapter 4      Problem, Meet Solution
Country PhoneWebsite
United	States 1-800-275-2273www.apple.com/support
Australia (61)	1-300-321-456www.apple.com/au/support
Canada	(English)	
														 (French) 1-800-263-3394
www.apple.com/ca/support	
www.apple.com/ca/fr/support
Ireland (353)	1850	946	191www.apple.com/ie/support
New	Zealand 00800-7666-7666www.apple.com/nz/support
United	Kingdom (44)	0844	209	0611www.apple.com/uk/support
Telephone	numbers	are	subject	to	change, 	and	local	and	national...

Help Center       ergonomics 
www.apple.com/environment 
Last, but Not Least
5  

66Chapter 5      Last, but Not Least
For	your	safety	and	that	of	your	equipment, 	follow	these	rules	for	handling	and	
cleaning	your	iMac	and	for	working	more	comfortably. 	Keep	these	instructions	handy	
for	reference	by	you	and	others.
NOTICE:  Incorrect	storage	or	use	of	your	computer	may	void	the	manufacturer’s	
warranty.
Important Safety Information
WARNING:  Failure	to	follow	these	safety	instructions	could	result	in	fire, 	electric	
shock, 	or	other	injury	or	damage.
Proper handling		Set	up	your...

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Chapter 5      Last, but Not Least
Unplug	the	power	cord	(by	pulling	the	plug, 	not	the	cord)	and	disconnect	the	ethernet	
cable	or	phone	cord	if	any	of	the	following	conditions	exist:
	
ÂYou	want	to	add	memory
	
ÂThe	power	cord	or	plug	becomes	frayed	or	otherwise	damaged
	
ÂYou	spill	something	into	the	case
	
ÂYour	iMac	is	exposed	to	rain	or	excess	moisture
	
ÂYour	iMac	has	been	dropped	or	the	case	has	been	damaged
	
ÂYou	suspect	that	your	iMac	needs	service	or	repair
	
ÂYou	want	to	clean	the	case...

68Chapter 5      Last, but Not Least
Power specifications:
	
ÂVoltage:		100	to	240	 V	AC
	
ÂCurrent:		4	A, 	maximum
	
ÂFrequency:		50	to	60	Hz
Hearing damage		Permanent	hearing	loss	may	occur	if	earbuds	or	headphones	are	
used	at	high	volume. 	Set	the	volume	to	a	safe	level. 	You	can	adapt	over	time	to	a	
higher	volume	of	sound	that	may	sound	normal	but	can	be	damaging	to	your	hearing. 	
If	you	experience	ringing	in	your	ears	or	muffled	speech, 	stop	listening	and	have	your	
hearing	checked. 	The	louder...

69
Chapter 5      Last, but Not Least
A	Class	1	laser	is	safe	under	reasonably	foreseeable	conditions	per	the	requirements	in	
IEC	60825-1	and	21	CFR	1040. 	However,	it	is	recommended	that	you	do	not	direct	the	
laser	beam	at	anyone’s	eyes.
Laser Information for Optical Disc Drives
WARNING:  Making	adjustments	or	performing	procedures	other	than	those	specified	
in	your	equipment’s	manual	may	result	in	hazardous	radiation	exposure. 	
The	optical	disc	drive	in	your	iMac	contains	a	laser	that	is	safe	in...

70Chapter 5      Last, but Not Least
Important Handling Information
NOTICE: Failure	to	follow	these	handling	instructions	could	result	in	damage	to	your	
iMac	or	other	property.
Operating environment		Operating	your	iMac	outside	these	ranges	may	affect	
performance:
	
ÂOperating temperature:		50°	to	95°	F	(10°	to	35°	C)
	
ÂStorage temperature:		-4°	to	116°	F	(-20°	to	47°	C)
	
ÂRelative humidity:		5%	to	95%	(noncondensing)
	
ÂMaximum operating altitude:		10,000	feet	(3048	meters)
Do	not	operate	your	iMac...