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Lenovo電腦A55底板插頭針腳詳解
現今的電腦就像垃圾一樣，用了2年多的Lenovo A55 8760 AK7電腦﹝名真的夠長，簡單點就是Intel 945﹞，這幾星期不斷出現藍畫面或硬碟燈長著的情況，起初以為是Windows或硬碟的問題，重裝以後還是一樣。今天終於把整部電腦拆下來測試，硬碟好像沒有問題，反而是底板上的電解電容，一看上去脹脹的，就知又是經典的『爆cap』事件。
既然是底板問題，機箱火牛還沒有壞，當然是物盡其用，為的是省錢好或是環保也好，心以為只要換上另一塊底板就可以了。誰不知Lenovo那一位的天才，Front panel socket、USB socket同Audio socket的針位，居然與一般底板的設計，根本就是不一樣。
幸好在網上世界，真的是甚麼都有，現在開始改裝插針位。
Lenovo的面板插座共有3組6條電線，分別為：
| Pin 1 | Black | HD LED ground |
| Pin 2 | Yellow | HD LED positive |
| Pin 6 | Black | Power LED ground |
| Pin 8 | Green | Power LED positive |
| Pin 10 | Yellow | Power switch |
| Pin 12 | Black | Power switch |
Lenovo的USB插座共有2組10條電線，比正常底板的2組8條線為多，分別為：
| Pin 1 | Black | USB ground |
| Pin 2 | Black | USB ground |
| Pin 3 | Red | USB 1 power positive |
| Pin 4 | Brown | USB 2 power positive |
| Pin 5 | White | USB 1 data negative |
| Pin 6 | Blue | USB 2 data negative |
| Pin 7 | Green | USB 1 data positive |
| Pin 8 | Yellow | USB 2 data positive |
| Pin 9 | Black | USB 1 power ground |
| Pin 10 | Black | USB 2 power ground |
對應現時大部份底板的USB插座針位：
| Pin 1 | Red | USB 1 power positive |
| Pin 2 | Red | USB 2 power positive |
| Pin 3 | White | USB 1 data negative |
| Pin 4 | White | USB 2 data negative |
| Pin 5 | Green | USB 1 data positive |
| Pin 6 | Green | USB 2 data positive |
| Pin 7 | Black | USB 1 power ground |
| Pin 8 | Black | USB 2 power ground |
| Pin 9 | Not connected |
會發現USB插座其實不用更改針位接線，只需對應Lenovo及新底板USB的power positive、data negative、data positive及power ground便可以。
Lenovo的Audio插座共有1組9條電線，分別為：
| Pin 1 | White | Jack presence signal send |
| Pin 3 | Brown | Line out jack presence return |
| Pin 5 | Blue | Mic in jack presence return |
| Pin 6 | Yellow | Mic in left |
| Pin 8 | Red | Mic in right |
| Pin 9 | Black (thin) | Front panel presence return |
| Pin 10 | Green | Line out left |
| Pin 12 | Grey | Line out right |
| Pin 14 | Black (thick) | Ground |
如需對應Intel HD Audio插座針位，可參考以下附圖。
| Pin 1 | Ground | |
| Pin 2 | Mic in left | |
| Pin 3 | Front panel presence return | |
| Pin 4 | Mic in right | |
| Pin 5 | Mic in jack presence return | |
| Pin 6 | Line out right | |
| Pin 7 | Not connected | |
| Pin 8 | Jack presence signal send | |
| Pin 9 | Line out jack presence return | |
| Pin 10 | Line out left |
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