要將第二臺顯示器連接到MacBook，首先要檢查MacBook的端口類型（如Thunderbolt/USB-C、HDMI或Mini DisplayPort），然後根據顯示器接口選擇合適的線纜或適配器；接著使用USB-C至HDMI或DisplayPort線纜等方案進行連接，並在系統(tǒng)設置中調整分辨率和排列方式以實現擴展或鏡像顯示。 1. 確認MacBook端口類型；2. 選擇匹配的線纜或適配器；3. 連接顯示器並自動識別；4. 在“系統(tǒng)設置→顯示器”中配置分辨率與排列佈局；5. 拖動菜單欄圖標確定主顯示器。完成以上步驟後即可正常使用雙屏模式，提升工作效率。

Connecting a second monitor to your MacBook is actually pretty straightforward, and it can make a big difference in how you work or play. Whether you're looking to boost productivity or just want more screen space, setting up an external display usually takes just a few steps and minimal gear.

Check Your MacBook's Ports

First things first—you need to know what kind of port your MacBook has because that determines the type of cable or adapter you'll need. Most recent MacBooks use Thunderbolt/USB-C ports , but older models might have HDMI or even Mini DisplayPort .

Here's a quick breakdown:

• Thunderbolt 3 (USB-C) : Newest MacBooks (2016 and newer)
• HDMI : Some older Intel-based MacBooks
• Mini DisplayPort : Older models from around 2015 or earlier

Once you know which port you have, match it to the input on your second monitor. If they don't match, you may need an adapter—like USB-C to HDMI or USB-C to VGA, depending on the monitor.

Choose the Right Cable or Adapter

Most modern monitors support HDMI or DisplayPort , so if your MacBook has a Thunderbolt/USB-C port, you'll likely need one of these setups:

• USB-C to HDMI cable – Works great for most users
• USB-C to DisplayPort cable – Good for high-refresh-rate monitors
• USB-C hub with HDMI out – Useful if you also want extra ports

If your monitor only supports older connections like VGA or DVI, you'll definitely need an adapter. Just keep in mind those older formats won't support the highest resolutions or refresh rates.

Also, pay attention to resolution and refresh rate needs. For example, if you're using a 4K monitor at 60Hz, not all cables or adapters will handle that smoothly.

Connect and Configure the Monitor

Once you've got the right cable or adapter, plug everything in. Most of the time, macOS will automatically detect the new display.

To adjust settings:

• Go to System Settings > Displays
• You'll see options to change resolution , arrangement , and whether you want the displays extended or mirrored

Dragging windows between screens works based on how you set up the arrangement in macOS. If the monitors are side by side in real life, arranging them the same way in settings makes switching much smoother.

You can also choose which display is your “main” one by dragging the menu bar icon to the screen you prefer.

That's basically it. Once connected and arranged, your second monitor should work without any extra setup. It's not complicated, but getting the right cable and knowing your ports helps avoid headaches.

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