MacBook 無線延伸螢幕 解析度調整教學
許多人常遇到使用延伸螢幕後螢幕文字變小、模糊等狀況，其中解析度就是一個原因，今天來教大家如何使用 MacBook 無線延伸螢幕 調整解析度。
前置步驟：安裝與連結電視棒
請先安裝好您的電視棒已便後續操作，本篇使用 Macbook Pro 與 小鴨電視棒 進行教學
延伸螢幕設定
開始投影前，請確定您的 Mac 和 電視棒 是連接相同的 WiFi 網路。
接著再在 Mac 上，選擇「蘋果圖示」選單 >「系統偏好設定⋯」，按一下「顯示器」，然後按一下「顯示器設定」。
按一下顯示器的名稱，然後從彈出式選單中選擇「延伸顯示器」。
不清楚步驟的話，可參考更詳細的延伸螢幕投影教學（延伸閱讀：Mac 延伸螢幕 如何AirPlay 投影到電視？）
延伸螢幕 解析度設定
在 Mac 上，選擇「蘋果圖示」選單 >「系統偏好設定⋯」
系統偏好設定 >點選「顯示器」
按一下顯示器的名稱，從彈出式選單中選擇「延伸顯示器」 > 解析度：縮放>選擇您需要的畫質完成，就成功囉！
設定成功畫面
不需要連接複雜的線材也可以延伸螢幕多工操作，是不是非常方便呢！
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如果螢幕鏡像輸出或串流功能在與 AirPlay 相容的裝置上無法運作
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iPhone 電視棒使用教學
AirPlay is a proprietary wireless communication protocol stack/suite developed by Apple Inc. that allows streaming between devices of audio, video, device screens, and photos, together with related metadata. Originally implemented only in Apple’s software and devices, it was called AirTunes and used for audio only.Apple has since licensed the AirPlay protocol stack as a third-party software component technology to manufacturers that build products compatible with Apple’s devices.
AirPlay, then AirTunes, was introduced in iOS 4.2 and was compatible with Airport Express.
Apple announced AirPlay 2 at its annual WWDC conference on June 5, 2017. It was scheduled for release along with iOS 11 in the third quarter of 2017, but was delayed until June 2018.Compared to the original version, AirPlay 2 improves buffering; adds streaming audio to stereo speakers; allows audio to be sent to multiple devices in different rooms; and control by Control Center, the Home app, or Siri,functionality that was only available previously using iTunes under macOS or Windows.