网线上插头的外观为 8 芯公插头 (RJ45)：
以太网 10/100Base-T 接口
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网卡上以及 Hub 上接口的外观为 8 芯母插座 (RJ45)：
网线上插头的外观为 8 芯公插头 (RJ45)：
| 引脚定义 |
| Pin | Name | Description |
|---|---|---|
| 1 | TX+ | Tranceive Data+ (发信号+) |
| 2 | TX- | Tranceive Data- (发信号-) |
| 3 | RX+ | Receive Data+ (收信号+) |
| 4 | n/c | Not connected (空脚) |
| 5 | n/c | Not connected (空脚) |
| 6 | RX- | Receive Data- (收信号-) |
| 7 | n/c | Not connected (空脚) |
| 8 | n/c | Not connected (空脚) |