Can i connect 10 Gbps  Network card to 1 Gbps Ethernet Switch ..??

harisaboobaker
harisaboobaker used Ask the Experts™
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Can i connect 10 Gbps  Network card to 1 Gbps Ethernet Switch using cat 6a cable ???
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Distinguished Expert 2018

Commented:
Most likely you can. That depends connector type and supported speeds of network card.
In the case of Windows you can check speed:
Control Panel\Network and Internet\Network Connections -> Network Card Properties
 SupportedSpeeds
JohnBusiness Consultant (Owner)
Most Valuable Expert 2012
Expert of the Year 2018

Commented:
Yes, that will work. Nothing special to do so far as I know.  It will just use the slower speed.
MASEE Solution Guide - Technical Dept Head
Most Valuable Expert 2017

Commented:
As suggested by John no special settings required. it will work the least speed supported. i.e. 1Gbps
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Top Expert 2014

Commented:
It really depends if the NIC supports slower speeds.  If it does there's no issue, but if it only supports 10Gbps it won't work.

What 10G NIC do you have?
JohnBusiness Consultant (Owner)
Most Valuable Expert 2012
Expert of the Year 2018
Commented:
Most NIC's like this support the next lower speed (the ones we use at any rate) so it should work fine.
Top Expert 2014

Commented:
While I agree that most NICs will support the lower speed, John, don't take it for granted that all will.  If it's 802.3an-compliant it will work at lower speeds, but if it's a specific type of card it might not.
JohnBusiness Consultant (Owner)
Most Valuable Expert 2012
Expert of the Year 2018
Commented:
I think that probably 90% or more of high quality NIC's will work. A smidgen (10%) might not and cheap NIC's might not but then we purchase top quality.

@harisaboobaker - you have not responded to any post here.
Top Expert 2014
Commented:
Not exactly, John.  Some high-end server NICs will only work at 10Gbps.  I wouldn't call them cheap nor would I call them poor quality.

For example, some NICs have a SFP+ slot that can accommodate a copper or fibre SFP+.  The copper SFP+ modules will only work at one speed, as will CX4, Twinax, etc.

We really need to know what NIC we're talking about before we give a definitive answer.
MASEE Solution Guide - Technical Dept Head
Most Valuable Expert 2017

Commented:
Agree with Craig.
Rare case I found NIC doesn't support, Shows as disconnected and we have to manually change the speed to get it working.

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Commented:
Thanks...All

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