推荐回答（5个）
目前笔记本的网线接口均为RJ45接口网线。
RJ45插头又称RJ45模块化插头，用于数据电缆的端接和设备及配线架模块的连接和更换。RJ45晶头要求具有良好的导电性能；触头三叉簧片镀金厚度为50μm，满足5级传输标准和t568a、t568b的线路顺序；具有防松、堵、自锁功能。
RJ45插头是铜电缆布线中的标准连接器。它和插座（RJ45模块）构成一个完整的连接器单元。由这两个元件组成的连接器连接在导线之间，以实现导线的电气连续性。
它也是综合布线技术成品跳线的组成部分。RJ45水晶头通常连接在双绞线的两端。在标准的综合布线设计和安装中，该附件产品通常不单独列出，也就是说，用户不应自行完成双绞线与RJ45插头的连接。
扩展资料：
RJ45插头的分类：
RJ45插头分为无屏蔽插头和屏蔽插头。屏蔽RJ45插头的外围覆盖有屏蔽包层，但其物理外观与非屏蔽插头并无区别。另外还有一个专为工厂环境中的工业用途而设计的屏蔽RJ45插头，与屏蔽模块结合使用。
RJ45插头常采用一种防滑的插头护套，用来保护连接器，防止滑动，便于插拔。此外，它还有多种颜色选项，可以提供与嵌入式图标相同的颜色，以便正确连接。
参考资料来源：百度百科-RJ45
笔记本电脑没有RJ45接口就需考虑使用USB转RJ45口（俗称USB网卡）来接网线，如果家里有无线局域网也可使用笔记本自带的无线局域网卡或是安装一个USB无线局域网卡来连接网络。
每一台笔记本正常情况下都会有RJ45口的，部分超薄本由于机身的原因可能没有，但是厂商都会在机身设计一个RJ45转换口同时并提供一根可以转换成RJ45口的数据线。
没有网络接口可以使用USB转RJ45接口。
插入笔记本的USB接口，安装驱动之后就可以连接网线使用了。
有USB口啊 买个USB转RJ45的转换器不就行么 就20块钱的样子
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