想问下，关于英特尔X550网卡

roamer

1. In addition, the X550 controller also supports
   
2. NBASE-T technology. NBASE-T technology can
   
3. increase network speeds of 2.5Gb/s or 5Gb/s using
   
4. existing CAT5e/CAT6 cables at lengths up to 100 m.
   
5. Intel’s NBASE-T firmware can be upgraded to support
   
6. the IEEE 802.3bz specification¹.

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文档里找到了这段，应该可以

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1. NBASE-T speed advertisement (2.5 GbE/5 GbE) is disabled by default in the Sageville NVM.
   
2. An NBASE-T enabled driver should be used to link at NBASE-T speeds.
   
3. Linux driver version 4.3.9 is currently the only supported software solution for NBASE-T.
   
4. For future planned enhancements, contact your Intel representative

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更新一下，只有Linux下有可用的驱动

HonjoNia

买个4121配光转电不就行了，买x550这种废品有啥用...