{"type":"product","schema_version":"1.0","item_id":"100805294547","canonical_url":"https://tw.bid.yahoo.com/item/100805294547","title":"RS232接口擋板線 主機板擴充卡 PCI外接擴充擋板 COM排線/串口擋板 9針擋板線 桌上型電腦主機板接線","subtitle":null,"condition":"全新品","currency":"TWD","observed_at":"2026-05-02T11:47:53.568Z","current_price":29,"original_price":null,"stock_status":"in_stock","available_quantity":1968,"sold_quantity":57,"seller":{"id":"Y8509958395","name":"RED EYES","positive_rate":null,"rating_count":null},"images":[{"url":"https://img.yec.tw/ob/image/4c4a9915-bc2a-42cf-92e2-d38c4ceb44dc.jpg","role":"main","alt":"商品主圖","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/204b1d09-1e24-4632-8768-1e525d0035a0.jpg","role":"detail","alt":"商品圖片 2","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/bea09592-d8ad-46a9-976f-65629fe8cd8a.jpg","role":"detail","alt":"商品圖片 3","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/471d0dc6-134c-443c-8fae-bbbd8af866d0.jpg","role":"detail","alt":"商品圖片 4","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/3f2a02ee-01b4-4d91-b1f6-b9a116020436.jpg","role":"detail","alt":"商品圖片 5","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/5da74c01-ffa2-4447-8085-64ec30f6f2c8.jpg","role":"detail","alt":"商品圖片 6","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/b978377c-9bdb-4038-b9be-179b7869e38f.jpg","role":"detail","alt":"商品圖片 7","width":null,"height":null},{"url":"https://img.yec.tw/ob/image/545f4d76-1382-4dca-af84-2afdd6f37a11.jpg","role":"detail","alt":"商品圖片 8","width":null,"height":null}],"description":"用於擴展連接主板的COM介面和老式遊戲手把或搖桿9pin COM埠後置擴充檔板，一端為標準的9pin COM埠，另一端直接接在主機板上，擋板接後面的PCI空槽，安裝簡單方便。 \n\n電腦對電腦-交叉，電腦對設備-直連\n\n何時使用交叉線和直連線？使用交叉線（Cross-over Cable）時：當連接兩個相同類型的設備。例如，一台電腦連接到另一台電腦，或單晶片開發板連接到另一個單晶片開發板。因為兩端設備都是標準串列埠（2號接腳發送，3號接腳接收），需要用交叉線將發送端和接收端相互連接。連接方式：將2號接腳與另一端的3號接腳連接，將3號接腳與另一端的2號接腳連接。使用直連線（Straight-through Cable）時：當連接兩種不同類型的裝置時。例如，電腦（DTE）與數據機（DCE）的連接。電腦的發送端連接到數據機的接收端，電腦的接收端連接到數據機的發送端。由於設備本身已經包含了訊號的交叉功能，因此線材本身不需要交叉。如何區分交叉線和直連線？使用萬用電表測量。直連線：: 用萬用電表測量時，同一編號的接腳是連通的，例如2號接腳連通2號接腳，3號接腳連通3號接腳。交叉線：: 用萬用電表測量時，2號腳會連通另一端的3號腳，而3號接腳會連通另一端的2號接腳。","shipping_methods":[{"name":"宅配/貨運","fee":0,"currency":"TWD"},{"name":"7-ELEVEN取貨付款","fee":0,"currency":"TWD"},{"name":"萊爾富取貨付款","fee":0,"currency":"TWD"}],"lowest_shipping_fee":null,"payment_methods":["ATM轉帳","信用卡一次付清","萊爾富取貨付款","7-ELEVEN取貨付款"],"category_id":"2092064165","category_name":"其他介面卡","breadcrumb":[{"id":"23336","name":"電腦、平板與周邊","url":"/tw/%E9%9B%BB%E8%85%A6%E3%80%81%E5%B9%B3%E6%9D%BF%E8%88%87%E5%91%A8%E9%82%8A-23336-category.html"},{"id":"2092072521","name":"電腦零組件","url":"/tw/%E9%9B%BB%E8%85%A6%E9%9B%B6%E7%B5%84%E4%BB%B6-2092072521-category.html"},{"id":"2092073533","name":"顯示卡/介面卡","url":"/tw/%E9%A1%AF%E7%A4%BA%E5%8D%A1-%E4%BB%8B%E9%9D%A2%E5%8D%A1-2092073533-category.html"},{"id":"2092064165","name":"其他介面卡","url":"/tw/%E5%85%B6%E4%BB%96%E4%BB%8B%E9%9D%A2%E5%8D%A1-2092064165-category.html"}],"view_count":3,"watch_count":3}