With Target Display mode, you can use your 27-inch iMac with Mac OS X as an external display. Connect any computer or other device with a Mini DisplayPort to your 27-inch iMac using a Mini DisplayPort to Mini DisplayPort cable or using a converter that converts other electrical, video, and audio protocols from another source device to Mini DisplayPort compliant signals.  (Cables and converters available separately.)
| Read more »Learn about the types of random access memory (RAM) and video memory (VRAM) used in iMac computers. For specific instructions on installing memory, refer to the linked documents.
| Read more »To learn where the serial number is located on your iMac, first identify which model of iMac you have. Use the information in these linked documents to find your iMac's serial number.
| Read more »Server Admin Tools 10.6.4 contain remote administration tools, documentation, and utilities that you can install on a Mac other than your server. This version requires Mac OS X v10.6.4 and is required to administer Mac OS X Server v10.6.4 remotely. The Server Admin Tools 10.6.4 are available as an automatic Software Update for Macs running Mac OS X v10.6.4 with version 10.6 or later of the Server Admin Tools already installed, and as a manual download from Apple Support Downloads.
Important: If you have moved any of the Server Admin Tools out of their original locations (inside /Applications/Server/), the update may continue to appear in Software Update even after you have installed it. Return the Server Admin Tools to their original location before using Software Update, or remove any duplicate copies of the Server Admin Tools.
Your iPhone, iPad, or iPod touch may not always update when you read, delete, reply to, or move messages in MobileMe Mail, or in an email application on your Mac or PC.
| Read more »Learn about the key placement and functionality on MacBook (Late 2007) and later, MacBook Pro (Early 2008) and later, and MacBook Air computers.
| Read more »This article explains when you should expect to see the lock icon when browsing webpages with encrypted content using Safari 5.
| Read more »Learn about the Apple Battery Charger, which types of batteries are supported, what the indicator lights mean, and tips for optimal usage. ¬†¬†
| Read more »iTunes for Windows may quit unexpectedly on your PC when the VoiceOver feature has been enabled with iPod shuffle (3rd generation) or iPod nano (5th generation) and:
Your Windows username uses a double-byte language such as Japanese, Korean, or Chinese
OR
Your Windows username uses extended ASCII (or high ASCII) characters (such as characters like any of these: éééèèóóúú).
| Read more »iTunes for Windows (versions 9.2 and 9.2.1) may quit unexpectedly during sync or backup with iPhone, iPod touch, or iPad. iTunes may display the following alert messages:
"SyncServer has stopped working" (or a similar message)
"MobileDeviceHelper has stopped working"
Safari 5 for Windows may also quit unexpectedly. This can happen if your PC is set to one of the following timezones:
(UTC-11:00) Coordinated Universal Time -11 and Samoa
(UTC-04:00) Asuncion
(UTC-02:00) Mid-Atlantic
(UTC) Coordinated Universal Time and Casablanca
(UTC +02:00) Amman, Athens, Bucharest, Istanbul, Beirut, Cairo, Damascus, Jerusalem, Harare, Pretoria, Helsinki, Kyiv, Riga, Sofia, Tallinn, Vilnius, Minsk, and Windhoek
(UTC +12:00) Coordinated Universal Time +12 and Auckland, Wellington, and Fiji
After installing Safari 5 (with Mac OS X v10.5.8, Mac OS X v10.6.2, or v10.6.3), or after installing Mac OS X v10.6.4 (which includes Safari 5), you may see a black background instead of readable text in Mail messages that are generated by some applications. These are some of the Apple and third-party applications that may be affected:
Mail
AppleScript
iCal
iChat
Preview
 
FileMaker Pro
Microsoft Word
Microsoft Excel
Other applications that generate Mail messages may also be affected.
| Read more »This document describes the security content of Safari 5.0.1 and Safari 4.1.1.
For the protection of our customers, Apple does not disclose, discuss, or confirm security issues until a full investigation has occurred and any necessary patches or releases are available. To learn more about Apple Product Security, see the Apple Product Security website.
For information about the Apple Product Security PGP Key, see "How to use the Apple Product Security PGP Key."
Where possible, CVE IDs are used to reference the vulnerabilities for further information.
To learn about other Security Updates, see "Apple Security Updates."
When using a POP email account with multiple devices, email messages may only appear on the first device that receives them. This occurs when an email client is configured to automatically remove email from the server once an email client has received it. You can configure your email client (or clients) either to keep a copy of the email on the server, remove it after a certain number of days have passed, or keep it until you move it from your Inbox.
| Read more »If your computer stops recognizing your Apple wireless mouse or wireless trackpad, simply click the mouse button or trackpad surface to get it working again.
| Read more »Learn more about the terms commonly used with Bluetooth devices.
| Read more »Some Mac computers come with a wireless mouse and keyboard as the default configuration.¬† Most Mac computers work with wireless input devices that use Bluetooth technology.
| Read more »Learn how to locate the serial number on your aluminum Intel-based iMac computers.¬†
| Read more »Add-ons such as plug-ins and scripts not manufactured by Apple add features to iTunes or modify its appearance and behavior. Using these can interfere with the normal usage of iTunes. This can be particularly relevent if you have recently upgraded to a newer version of iTunes as add-ons may not be compatible. There are many ways in which an add-on can cause iTunes to act erratically such as those listed below:
Loss of iTunes functionality, such as the Visualizer.
Distortion or irregularity in the iTunes interface.
Slow performance.
iTunes won't open or quits unexpectedly.
In some cases, iPhone may not show up in iTunes under Devices while displaying the following error message:
| Read more »When using iOS 4 or later, the Nike+ application does not offer an option for a calibration workout. Instead, you can calibrate at the end of any workout.
| Read more »An expired MobileMe account continues to be a valid Apple ID (AppleConnect login) for use with Apple Services.
| Read more »You can view and share files on your iDisk with the iDisk app for iPhone, iPad, and iPod touch. For help using the iDisk app, open the app, tap Settings in the upper-left corner, then Tap iDisk Help.
If you encounter issues while using the iDisk app, the steps below can help you troubleshoot further. iDisk app version 1.2 or later is recommended for all MobileMe iDisk app users.
This article gives an overview of how the iPad uses Location Services to determine your location. For information on using Location Services to track your location in Maps and other applications, see the iPad User Guide.
| Read more »This article tracks significant known issues in the MobileMe Calendar beta and¬†will be updated as issues are resolved.
This article is intended for participants in the beta only. For more information, see the MobileMe Calendar beta FAQ.
Is your Apple computer having issues playing sound from the built-in speakers—except perhaps for the startup chime—but sound works through external speakers, digital output, or headphones? Is a red light is visible from the audio line-out port when you disconnect devices? These steps may help you troubleshoot issues playing sound from the built-in speakers on your Apple computer. 
| Read more »Learn about the sizes and shape of discs that can be used in the CD-ROM, DVD-ROM, CD-RW, Combo and SuperDrives in various Macintosh computers.
| Read more »In May 2006, Apple introduced the first generation black or white MacBook computer. A unibody aluminum MacBook was subsequently introduced in October 2008. Then in October 2009, a unibody polycarbonate MacBook was introduced.¬†
Use the information below to help you determine which model you have.
The iMac (Early 2006) computer has two SDRAM slots in the bottom of the computer. The iMac ships from the factory with at least 512 MB of DDR2 SDRAM installed into the top slot. (The computer may come with more RAM in the top slot or RAM in the bottom slot, depending on how you ordered the computer from Apple.)
The iMac (Mid 2006) ships from the factory with at least 512 MB of DDR2 SDRAM, in two 256 MB DIMMs; one in each of the memory slots.
Note: If you upgrade the memory in your iMac (Mid 2006), make sure you have matching size SO-DIMMs in each slot for best graphics performance.
The iMac (17-inch Late 2006 CD) ships from the factory with at least 512 MB of DDR2 SDRAM, in two 256 MB DIMMs; one in each of the memory slots. All other models of iMac (Late 2006) ship from the factory with at least 1 GB of DDR2 SDRAM, in two 512 MB DIMMs; one in each of the memory slots.
The maximum amount of RAM you can install in the iMac (Early 2006), iMac (Mid 2006) and...
After installing Mac OS X v10.6.4, opening iTunes may result in the text displaying as squares.
 
| Read more »An Apple ID allows you to access multiple Apple resources such as Apple Discussions, iTunes, the Apple Online Store and much more. It's important to keep your sign in credentials secure to reduce the chances of your Apple ID and¬†personal information from being compromised. The following tips will help to reduce the risk of theft or stolen identity.¬†
| Read more »Use this procedure to restore to the original factory settings and the software that originally came with your computer, using the Mac OS¬†X¬†v10.6 Snow Leopard Install DVDs that shipped with it.
| Read more »This article describes ways to find your iPod serial number. The content of this document also applies to iPod shuffle; however, see iPod shuffle: How to find the serial number for information on how to locate iPod shuffle's serial number on the device.
| Read more »This article explains how to use iChat to text chat, audio chat, or video chat over the Internet.
| Read more »Mac OS X Server Software Update Service can provide Apple Software Updates to Mac OS X clients running the same, or earlier Mac OS X release.
| Read more »Users who used Wiki Server under Mac OS X Server v10.5 may experience issues starting up the server after an update to 10.6.4 or later. If short names of wiki groups were changed in 10.5, there may be wiki folders whose metadata.plist files contain duplicate GUIDs. The following log message will be written to /Library/Logs/wikid/error.log on update:
File "/usr/share/wikid/lib/python/apple_utilities/MigrationManager.py", line 283, in migrateEntityFolder
  oldOwner = aGroup.data.get('owner', None)
exceptions.AttributeError: 'NoneType' object has no attribute 'data'
There are two ways to get iTunes content from your computer to Apple TV—syncing and streaming. This document explains the differences between syncing and streaming on Apple TV with software version 1.x.
| Read more »This FAQ applies to anyone who was invited to join the MobileMe Calendar beta. The information in this article is only intended for participants of the beta.
| Read more »This article discusses the compatibility of the Apple Wireless Keyboard and third-party Bluetooth keyboards with iOS devices.
| Read more »This article describes two different methods of downgrading from the MobileMe Calendar Beta. Method one is a simple downgrade that reverts your calendars to the state they were in prior to you joining the beta. Method two describes an experimental method that should allow you to downgrade and keep the calendar information you created during the beta.
| Read more »This article describes several ways to find your iPad serial number¬†and the Identifier (UDID)‚ÄîWi-Fi and¬†Wi-Fi + 3G¬†models‚Äîas well as the International Mobile Equipment Identity (IMEI) number, Cellular Data Number (CDN), and Integrated Circuit Card ID (ICCID) number (Wi-Fi + 3G model only).
| Read more »Immediately after updating to iOS 4.0, some users may notice that Exchange ActiveSync Mail, Contacts, or Calendars do not sync, or sync very slowly. In addition, some Exchange Server administrators may notice their servers running slowly.
| Read more »When I play music or listen to a call through the speaker phone, the sound may appear low or muffled, or the person I'm talking to claims that I sound muffled or not loud enough.¬†
| Read more »Learn why the storage capacity stated in a product's specification may be lower than what is reported by Mac OS¬†X or iOS.
| Read more »You can enable Restrictions, also known as Parental Controls, on an iPhone, iPad, or iPod touch to prevent access to specific features. This article provides an overview of the types of Restrictions that are available, as well as how to enable or disable Restrictions on your device.
| Read more »Learn more about the memory used with Mac mini (Early 2009), Mac mini (Late 2009), and Mac mini (Mid 2010).
| Read more »Use the information below to help you determine which model you have.¬† In 2006, Apple introduced the first generation MacBook Pro computer. A unibody aluminum MacBook Pro was introduced in October 2008.
| Read more »When syncing a device using¬†iOS 3 or later, syncing may stop with Error 13019.
| Read more »You may encounter the following issues:
You are unable to receive MMS messages
You do not see the camera icon next to the message field:
A red exclamation mark appears next to MMS messages you send:
Note: MMS is not available for original iPhone
| Read more »When someone calls, I can't hear them through the receiver or speaker phone, and I can't hear music through the speaker. I also can't be heard by someone who is calling me.
Note: iPhone has one speaker, which is adjacent to the dock connector. On iPhone 4, the speaker is to the right of the dock connector. On earlier iPhone models, the speaker is to the left of the dock connector.
On some noncompliant Mini-DisplayPort to HDMI adapters, the audio signal may not be passed to the HDMI device.
| Read more »Learn about the power supplies in various Apple products and whether they can switch automatically to voltages in other countries.
Some Apple computers have an auto-switching power supply which monitors the incoming voltage and automatically switches itself accordingly. Other Apple computers have a power supply that must be manually switched for various incoming voltages. In this case, the change is made by moving the voltage selector switch which is accessible from outside the computer's case. Still other Apple computers have a power supply that is rated only for the country in which it is sold and it cannot switch to other voltages.
The table below shows what type of power supply is in various recent Macintosh models. Some models can use the World Travel Adapter Kit. If your computer cannot use the World Travel Adapter Kit and you need a power adapter or power cord with an appropriate plug, contact an Apple-Authorized Service Provider (AASP) in the region.
If you need to send your iPhone in for service, please remove your SIM card before sending the iPhone in for repair.
| Read more »
