9

Do I still need a crossover cable to connect two PC's directly? (NIC <-> NIC)?

If not, then why was this needed in the past, and when was it used for this? Specifically, when did crossover cables stop being needed to directly connect 2 PCs?

  • 7
    Note: Cross-over cables only applied to 10 and 100Mb Ethernet. Gigabit sends and receives on all 4 pairs at the same time. – Chris S Mar 5 '14 at 14:36
  • Why is this off-topic? – Heinzi Oct 13 '16 at 8:56
  • @ChrisS, what you describe only applies to UTP cabling. Ethernet on fiber-optic cabling still requires a crossover cable between two like devices, even at gigabit speeds. – Ron Maupin Oct 11 '17 at 14:44
13

Most (all?) current devices have implemented ethernet auto mdix. The answer is simple: You don't need such cable.

| improve this answer | |
  • but from when? from 10 years ago? – evachristine Mar 5 '14 at 11:22
  • @evachristine there is probably no border date.. – neutrinus Mar 5 '14 at 11:24
  • Then I will say about ~2005... according to google searches.. – evachristine Mar 5 '14 at 11:25
  • 2
    @evachristine I remember having to use on in the 90s. I think by the early 2000s most devices were Auto MDI-X. Then 1GbE took over and made the whole thing moot. – Chris S Mar 5 '14 at 14:44

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