Hi,

After a days of googling I decide to try to get answers from Dell experts.

So, I need some help to choose DACs to connect different devices (Next there are just cases):

1) Connect a Dell Poweredge R820 with a QLogic 57840S adapter (Quad port SFP+)  to a Cisco 3560X

2) Connect a Dell Poweredge T430 with an Intel X520-DA2 adapter to a Cisco 3560X

3) Connect the R820 to the T430

I want to ask also witch SFP 10G SR MM transceiver should I chose to connect Dell servers to an optical fiber (Cisco ones can work without issues, or should I take Dell ones, or a transceiver for each brand)?

Thank you a lot