Difference between SFP+ Cables

[PenguinMaster]

Is there a difference between these two SFP+ cables? One has a red pcb and the other has a green pcb, but they have the same model number. Is there any reason I should choose one over the other? I noticed one is bent and the other is circular, not sure if bending the cable like that affects it at all.

 

https://www.ebay.com/itm/143755738832
 

https://www.ebay.com/itm/324098702362

[Bombastinator]

I can’t identify this difference you speak of.  One is a pic of a single cable.  The other is a pic of a box of a bunch of them.

[Rhyst9]

Like most stuff Cisco parts are made by multiple vendors/batches with revisions. So very well should be identical electrically. As for the bend would be a problem, you should avoid tight bends in cables but they are pretty flexible.

[PenguinMaster]

I bought the one that didn't have excessive bends because of the difference in delivery times. The one that was "coiled" was coming in a week where as the other one wasn't expected until January. 

[Alex Atkin UK]

3 hours ago, Chickenfans said:

I bought the one that didn't have excessive bends because of the difference in delivery times. The one that was "coiled" was coming in a week where as the other one wasn't expected until January. 

Good move, I'm fairly sure coax should NOT be bent that tightly, could stretch the sheathing as well as break the core.

[Rhyst9]

On 10/15/2020 at 10:14 AM, Alex Atkin UK said:

Good move, I'm fairly sure coax should NOT be bent that tightly, could stretch the sheathing as well as break the core.

The bends that they were shouldn't be an issue, also isn't COAX, it's just stranded copper.

[Alex Atkin UK]

22 hours ago, Rhyst9 said:

The bends that they were shouldn't be an issue, also isn't COAX, it's just stranded copper.

https://en.wikipedia.org/wiki/Twinaxial_cabling#SFP+_Direct-Attach_Copper_(10GSFP+Cu)

Also note the bend radius table.

Those cables will almost certainly have suffered some damage to their outer mesh so they are no longer properly RF shielded, and may also have stretched or cracked the cores (not sure if they are solid copper but I'd suspect so).

[Rhyst9]

Agree that they maybe bent more than the technical spec of the cable, I doubt that those bends would have caused any serious damage and probably work just fine, but as stated it should be avoided to limit an issues.