您的 iMac 是否无法识别您的妙控键盘(Magic Keyboard)、鼠标(Mouse)或触控板(Trackpad)？还是难以保持与输入设备的稳定连接？通常，问题与键盘或鼠标有关，并且相对容易解决。但在某些情况下，您可能不得不求助于对 iMac 的各个方面进行故障排除来修复它。
下面的说明将引导您了解各种建议和解决方案，让您的 iMac 识别您的妙控键盘(Magic Keyboard)或鼠标(Mouse)。一些修复也适用于第三方无线键盘和鼠标。
浏览 iMac
某些修复需要功能正常的键盘或鼠标来导航和与 iMac 交互。以下是您可以执行的操作：
- 使用第三方有线USB键盘或鼠标。
- 在有线模式下使用妙控键盘(Magic Keyboard)或触控板（更多内容见下文）。(Trackpad)不幸的是，由于其充电端口的位置，您无法使用Magic Mouse 。
- 如果问题仅限于鼠标或触控板，请使用键盘导航屏幕元素(use the keyboard to navigate on-screen elements)或激活鼠标键(activate Mouse Keys)。
1. 打开/关闭键盘或鼠标
妙控键盘(Magic Keyboard)、鼠标(Mouse)或触控板(Trackpad)可能会在固件中偶尔出现故障，从而使其无法与您的 iMac 一起正常工作。值得庆幸的是，您可以通过重新启动有问题的输入设备来快速处理它们。只需(Just)找到电源(Power)开关，将其关闭(Off )（白色），然后打开(On)（绿色）。这同样适用于第三方无线键盘和鼠标。
注意(Note)：如果您正在设置新的 iMac，您的妙控键盘(Magic Keyboard)、鼠标(Mouse)或触控板(Trackpad)将不会显示，除非您将其打开。
2. 重启你的 iMac
另一个快速修复涉及重新启动 iMac。希望(Hopefully)这能解决与系统相关的小问题，阻止它识别或连接到您的键盘或鼠标。
1. 打开Apple 菜单(Apple menu )并选择重新启动(Restart)。
2. 取消选中重新登录时重新打开窗口(Reopen windows when logging back in)旁边的框。
3. 再次选择重新启动(Restart)以重新启动您的 iMac。
3.通过USB连接(USB)键盘(Keyboard)或鼠标(Mouse)
如果您的 iMac 无法识别您的妙控键盘(Magic Keyboard)、触控板(Trackpad)或鼠标，请通过(Mouse)USB短暂建立有线连接。如果这有助于恢复连接，请断开电缆并以无线方式使用设备。
注意(Note)：如果您从 iMac 单独购买妙控键盘(Magic Keyboard)、触控板(Trackpad)或鼠标(Mouse)，则该设备只能通过USB配对。
4. 为键盘或鼠标充电
剩余电量很少的蓝牙鼠标或键盘可能会在 iMac 上造成连接问题。(Bluetooth)所以，试着给它充电，看看是否有区别。
同样，将键盘、鼠标或触控板插入 iMac 上的USB端口，并等待至少 15 分钟，然后再次使用。如果您使用带有可更换电池的输入设备（例如，第一代妙控键盘(Magic Keyboard)和鼠标(Mouse)），请将它们更换为新的一对。
5.断开(Disconnect)并重新连接(Reconnect)到蓝牙
损坏的蓝牙(Bluetooth)设备缓存也可能是一个因素，因此以下修复涉及将Apple无线键盘、鼠标或触控板重新连接到 iMac。
1. 打开系统偏好设置(System Preferences)。
2. 选择蓝牙(Bluetooth)。
2. 选择输入设备旁边的X图标。(X)
4. 选择删除(Remove)。
5. 重新启动输入设备并选择连接(Connect)以重新将键盘或鼠标与您的 iMac 配对。
6. 移除并重新连接 USB 接收器(Reconnect USB Receiver)
如果您使用第三方非蓝牙键盘或鼠标，请移除USB接收器并将其重新插入，最好插入 iMac 上的其他端口。最好避免将接收设备连接到外部USB集线器或适配器。
7.重置蓝牙模块
接下来，尝试通过终端(Terminal)重置 iMac 的蓝牙(Bluetooth)模块：
1. 在 Mac 上打开Launchpad，然后选择其他(Other)>终端(Terminal)。
2. 键入以下命令并按Enter：
须藤 pkill 蓝牙(sudo pkill bluetoothd)
3. 输入 Mac 的管理员密码，然后再次按Enter。
8.恢复出厂设置苹果设备
如果您使用 macOS Big Sur 或更早版本，您可以将妙控键盘(Magic Keyboard)、鼠标(Mouse)和触控板恢复(Trackpad)出厂设置。这可以解决您无法通过重新启动设备来解决的其他与固件相关的问题。
1.通过USB连接您的(USB)Mac键盘、鼠标或触控板。
2. Option - 单击控制中心(Control Center)或菜单栏上的蓝牙(Bluetooth)图标。
3. 选择出厂重置所有连接的 Apple 设备(Factory Reset all Connected Apple Devices)。
4. 选择确定(OK)。
9. 重置蓝牙偏好
损坏(corrupt Bluetooth preferences)的蓝牙首选项文件可能是 iMac 上出现任何无线鼠标或键盘问题的另一个原因。删除它并检查是否有影响。
1.按住 Control并单击(Control)Dock中的Finder图标，然后选择Go to Folder。
2. 在Go to Folder(Go to Folder)框中键入以下路径，然后按Enter：
~/Library/Preferences/
3. 找到(Locate)以下文件并将其拖入废纸篓：
com.apple.Bluetooth.plist
4. 重新启动您的 Mac。
注意：当您重新启动(Note)Mac时， macOS 将自动从头开始创建一个新的蓝牙(Bluetooth)首选项文件。如果遇到任何问题，请从垃圾箱(Trash)恢复原件。
10. 使用蓝牙设置助手(Bluetooth Setup Assistant)
在macOS 恢复(macOS Recovery)等特殊环境中，您的 iMac 可能不会自动连接到键盘和鼠标。发生这种情况时，请按 iMac 上的电源(Power)按钮三次（每次按后等待一秒钟），然后使用蓝牙设置助手(Bluetooth Setup Assistant)手动连接它们。
11. 在 iMac 上重置 NVRAM
如果您使用运行Intel芯片组的 iMac，重置 NVRAM（非易失性随机存取存储器）(resetting the NVRAM (non-volatile random access memory))也可以解决与键盘和鼠标相关的问题。但是，您需要有线键盘来执行此修复。
1. 关闭你的 iMac。
2.在按住Command、Option、P和R键的同时按下(R)电源(Power)按钮。
3. 当Apple(Apple)标志第二次出现或 iMac 响起两次时松开按键。
12. 执行 SMC 重置
如果问题仍然存在，请重置 iMac 的SMC（存储管理控制器(Storage Management Controller)）。
1. 关闭你的 iMac。
2. 拔下电源线。
3.等待(Wait)15 秒，然后插入电源(Power)线。
4. 再等待 5 秒。
5. 按电源(Power)按钮打开 iMac。
13. 更新你的 Mac
如果您的 iMac 预装了早期版本的 macOS（例如 macOS 12.0 Monterey），最好尽快安装任何待处理的更新以排除系统软件中的任何错误。
1. 打开Apple菜单并选择关于本机(About This Mac)。
2. 选择软件更新(Software Update)。
3. 选择立即更新(Update Now)。
你还能做什么？
来自外部源（例如非屏蔽电源线、厨房设备或其他无线设备）的无线干扰可能会严重干扰 iMac 与键盘或鼠标的连接。看看将桌面设备转移到您家或公寓的另一个区域是否有帮助。
如果问题仍然存在，请尝试将 iMac 故障排除到安全模式(troubleshooting your iMac into Safe Mode)。如果这也没有帮助，您可能正在处理有故障的键盘或鼠标。如果还在保修期内，请寄回更换。
iMac Not Recognizing Keyboard or Mouse? 13 Fixes to Try
Does your iMac fail to recognize your Magic Keyboard, Mouse, оr Trackpаd? Or does it struggle tо maintain a stable connection to your input devices? Usually, the issue is keyboard or mouse-relatеd and relatively easy to resolve. But in some casеs, you may have to resort to troubleshooting various aspects of your iMac to fix it.
The instructions below will walk you through various suggestions and solutions to get your iMac to recognize your Magic Keyboard or Mouse. Some of the fixes also apply to third-party wireless keyboards and mice.
Navigating Your iMac
Some fixes require a functioning keyboard or mouse to navigate and interact with your iMac. Here’s what you can do:
1. Turn Keyboard or Mouse On/Off
The Magic Keyboard, Mouse, or Trackpad can experience occasional glitches in the firmware preventing it from working correctly with your iMac. Thankfully, you can deal with them quickly by restarting the problematic input device. Just find the Power switch, flick it Off (white), and then On (green). The same applies to third-party wireless keyboards and mice.
Note: If you’re setting up a new iMac, your Magic Keyboard, Mouse, or Trackpad will not show up unless you turn it on.
2. Restart Your iMac
Another quick fix involves restarting your iMac. Hopefully, that should resolve minor system-related issues preventing it from recognizing or connecting to your keyboard or mouse.
1. Open the Apple menu and select Restart.
2. Uncheck the box next to Reopen windows when logging back in.
3. Select Restart again to reboot your iMac.
3. Connect Keyboard or Mouse via USB
If your iMac fails to recognize your Magic Keyboard, Trackpad, or Mouse, briefly establish a wired connection via USB. If that helps restore connectivity, disconnect the cable and wirelessly use the device.
Note: If you purchased a Magic Keyboard, Trackpad, or Mouse separately from your iMac, the device would only pair via USB.
4. Charge Keyboard or Mouse
A Bluetooth mouse or keyboard with little charge remaining can create connectivity issues on the iMac. So, try charging it and see if that makes a difference.
Again, plug your keyboard, mouse, or trackpad into a USB port on your iMac and wait at least 15 minutes before using it again. If you use an input device with replaceable batteries (e.g., the first generation Magic Keyboard and Mouse), swap them with a fresh pair.
5. Disconnect and Reconnect to Bluetooth
A corrupt Bluetooth device cache can also play a factor, so the following fix involves reconnecting your Apple wireless keyboard, mouse, or trackpad to your iMac.
1. Open System Preferences.
2. Select Bluetooth.
2. Select the X-icon next to the input device.
4. Select Remove.
5. Restart the input device and select Connect to re-pair the keyboard or mouse with your iMac again.
6. Remove and Reconnect USB Receiver
If you use a third-party non-Bluetooth keyboard or mouse, remove the USB receiver and plug it back in, preferably to a different port on your iMac. It’s also good to avoid connecting the receiving device to an external USB hub or adapter.
7. Reset Bluetooth Module
Next up, try resetting your iMac’s Bluetooth module via Terminal:
1. Open the Launchpad on your Mac and select Other > Terminal.
2. Type the following command and press Enter:
sudo pkill bluetoothd
3. Type in your Mac’s administrator password and press Enter again.
8. Factory Reset Apple Devices
If you use macOS Big Sur or earlier, you can factory reset your Magic Keyboard, Mouse, and Trackpad. That can resolve additional firmware-related issues that you can’t resolve by restarting the device.
1. Connect your Mac keyboard, mouse, or trackpad via USB.
2. Option-click the Bluetooth icon on the Control Center or menu bar.
3. Select Factory Reset all Connected Apple Devices.
4. Select OK.
9. Reset Bluetooth Preferences
A corrupt Bluetooth preferences file can be another reason for any wireless mouse or keyboard issues on your iMac. Delete it and check if that makes a difference.
1. Control-click the Finder icon in the Dock and select Go to Folder.
2. Type the following path into the Go to Folder box and press Enter:
~/Library/Preferences/
3. Locate and drag the following file into the Trash:
com.apple.Bluetooth.plist
4. Restart your Mac.
Note: macOS will automatically create a new Bluetooth preferences file from scratch when you restart your Mac. If it encounters any issues doing that, restore the original from the Trash.
10. Use the Bluetooth Setup Assistant
Your iMac may not automatically connect to the keyboard and mouse in special environments such as macOS Recovery. When that happens, press the Power button on your iMac three times (wait for one second after each press) and use the Bluetooth Setup Assistant to connect to them manually.
11. Reset NVRAM on iMac
If you use an iMac running an Intel chipset, resetting the NVRAM (non-volatile random access memory) can also resolve keyboard and mouse-related issues. However, you need a wired keyboard to perform this fix.
1. Turn off your iMac.
2. Press the Power button while holding down the Command, Option, P, and R keys.
3. Release the keys when the Apple logo shows up for the second time or when your iMac chimes twice.
12. Perform SMC Reset
If the issue persists, reset your iMac’s SMC (Storage Management Controller) next.
1. Turn off your iMac.
2. Unplug the power cable.
3. Wait for 15 seconds and plug in the Power cable.
4. Wait for another 5 seconds.
5. Press the Power button to turn on your iMac.
13. Update Your Mac
If your iMac came pre-installed with an early release of macOS (such as macOS 12.0 Monterey), it’s best to rule out any bugs in the system software by installing any pending updates as soon as possible.
1. Open the Apple menu and select About This Mac.
2. Select Software Update.
3. Select Update Now.
What Else Can You Do?
Wireless interference from external sources—such as unshielded power cables, kitchen equipment, or other wireless devices—can seriously mess up the connection from your iMac to your keyboard or mouse. See if shifting the desktop device to another area of your house or apartment helps.
If the issue persists, try troubleshooting your iMac into Safe Mode. If that doesn’t help as well, you’re likely dealing with a faulty keyboard or mouse. Send it back for a replacement if it’s still under warranty.
