No 1Gbps Ethernet

[Gianluca95]

Hello i just switched from a 100/20 to 1000/300 FTTH ethernet plan, and due to some locaction problems i had to connect the modem to a switch and then i linked my pc to it. When i linked my brother laptop to the switch it reached like 850 mbps but with my desktop it can go only at 90 or something. I immediately thought my motherbaord was not good enough but i checked and my asus h81 gamer with Intel(R) Ethernet Connection (2) I218-V should be able to reach at least 1 gbps.  I tried to change some configuration in my ethernet adaptor options but when i set duplex speed to 1gbps full duplex it loses connection. Do you have some suggestions?

Thank you for your help.

[Gorou92]

did you use the same cable ?

[Gianluca95]

1 minute ago, Gorou92 said:

did you use the same cable ?

yes but i could try using some other. it should be cat5e

[Skiiwee29]

1 minute ago, Gianluca95 said:

yes but i could try using some other. it should be cat5e

Try Cat 6 or higher. Ive seen cat5e for whatever reason cause auto negotiations to set to 100 meg which is what it seems to be doing. Unless its a managed switch and you can set the speed/duplex on the port, you will need to upgrade your cable most likely to Cat 6 or greater. 

[Gianluca95]

7 minutes ago, Skiiwee29 said:

Try Cat 6 or higher. Ive seen cat5e for whatever reason cause auto negotiations to set to 100 meg which is what it seems to be doing. Unless its a managed switch and you can set the speed/duplex on the port, you will need to upgrade your cable most likely to Cat 6 or greater. 

ok seems i fixed the thing by swtiching cable. i tried another cat5e and it works! the really strange thing is that the cable that gives me 90 mbps still works for my brother xD.

Thank you all.