I would like to ask again a question that had not been answered by the applicant
I have the Intel (R) Ethernet Connection (2) I219-V adapter but it is limited to 100Mbps.
The questions was:
1. What is the Operating System used?
2. Model of your motherboard/system.
BIOS Date: 01/03/18 10:00:19 Ver: 05.0000B
3. Is this is newly built system? If no, for how long is the system working fine?
I have just switched to ethernet before I was on wifi
4. When was the issue first encountered?
5. Is the 300Mbps a guaranteed rate form your Internet provider?
I have fibet up to 500Mb
6. Do you have another system or computer that you can use to test the speed of your Internet? This will help in isolating the issue.
I have a laptop on same network and I have Gigabit
7. What is the current driver version installed on your system and where it was downloaded from?
8. Can you share if the Speed & Duplex settings on Advanced tab property of the Ethernet Controller is set to Auto Negotiation?
Yes it is in Auto Negotiation
9. Please double check if the established connection speed in the settings can reach 1Gbps. To confirm this, go to Network and Internet Settings; View your Network Properties and scroll down to Link speed (Receive/Transmit).
Don't understand, actually I am in 100Mo
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