USB最初是由英特爾與微軟倡導發起，在1995年正式推出1.0規格，USB為Universal Serial Bus的縮寫，中文可以翻譯作通用序列匯流排，其中通用即代表可以讓不同裝置使用相同介面與電腦連結。除此之外，USB的另一特點是支援熱插拔和隨插即用，使用者不必先先將電腦關機，只需將裝置插入電腦，馬上就可以開始使用，大幅提升了連接裝置的方便性。
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在USB出現之前，各種電腦周邊往往採用不同的連接端子，上至滑鼠、鍵盤、遊戲控製器，下至撥接數據機、印表機，每款裝置都有自己專屬的線材，常把使用者 搞得一個頭兩個大。USB的出現不但解決了這個問題，越來越大的頻寬也括大了USB的發展空間，最新推出的歸範甚至可以即時傳輸影音訊號，而且接頭也沒有 方向性，正反兩面接可插入。
