If you're using wired Ethernet, you need to check that both LED indicators that surround the cable are lit.

如果你在用有线的以太网，你需要检查一下看电缆周围的两个LED指示灯是不是都亮了。

youdao

According to internet and network analysis firm Renesys, the cable lit up with activity last week with data flowing through it between Telefonica and the nation's state telecom company, Empresa de Telecomunicaciones de Cuba S.A. (ETECSA).

ENGADGET

Not the iTV that lit up conversations last year, but a set-top box used in coordination with cable companies.

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