Can a 10 gigabit ethernet NIC communicate properly with a 2.5 gigabit ethernet port?

1337Goat

1337Goat

Gawd
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Apr 15, 2020
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I'm building a router that uses a 4-port 10 gigabit PCIe card, and the specs say it's compatible with 10 gigabit and 1 gigabit speeds.

Does this mean that it won't negotiate to 2.5 gigabit speeds? It is either 1 or 10, but not 2.5?

I'm a total newbie to NICs, so I hope my question is clear enough.
 
If it's older, it will fallback to 1gbit.

Newer 10gig chipsets may support 2.5 and 5. but I don't think the transition is universal yet (so check your spec sheet)
 
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Well you could always upgrade the 2.5 to 10 and not have to worry about it!

Good answer by the other here...
 
Col_Temp said:
Well you could always upgrade the 2.5 to 10 and not have to worry about it!
Click to expand...

Not on a B550 ITX motherboard!
Sigh, ITX is cute, but certainly not my ideal.
My old x58 Sabertooth can be upgraded to 10Gbe easily, but my friend's shiny new ITX system is just so limited when it comes to modular upgrades.
 
Aegir said:
Not on a B550 ITX motherboard!
Sigh, ITX is cute, but certainly not my ideal.
My old x58 Sabertooth can be upgraded to 10Gbe easily, but my friend's shiny new ITX system is just so limited when it comes to modular upgrades.
Click to expand...


Well, then buy a card that supports the new modes - since you're building a custom router you hae the power to do this.
 
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