SC/LC Cable between 2960S stack and 4948

[randerson]

4948 has X2-10GB-SR

2960S has SFP-10G-SR

Hopefully this is a simple question - I'm connecting the two devices above and I need an LC to SC fiber cable. It should be pretty simple but I've seen two different types of LC/SC cables - one is 8.3/125 and one is 62.5/125. I believe the 62.5 is an older cable type but when looking at the detail sheets for each of the SFPs I see that both of these support a 62.5 or 50 micron core size.

So, which one do I need? What does the 8.3/125 cable get used for?

https://www.cdw.com/shop/products/Tripp-Lite-3-Meter-LC-SC-MMF-Fiber-Patch-Cable-62.5-125-10ft-EXCLUSIVE-PRICE/415028.aspx

or

https://www.cdw.com/shop/products/Belkin-3-meter-Singlemode-LC-SC-Duplex-Fiber-Optic-cable/402470.aspx

Thanks!

EDIT: looks like maybe singlemode is 8.3 and multimode is 62.5/50. Is that correct?

[Reza Sharifi · Accepted solution]

Most new cable infrastructures use 50u or 50/125 laser optimized. And as you already know 62.5 is an older version.

If you are connecting the 2 switches back-to-back without patch panels than use 50u. If you are going through patch panels and your existing infrastructure is 62.5, than use a 62.5 LC to SC patch cord.  This is all multimode.

HTH

[randerson]

I think that is what I need to know Reza - thanks (assigned points)