using M620 for m1000e in VRTX

Hi All,

I have several m620 that going to be pulled out of M1000e soon and retired.

I'm considering to buy an VRTX chassis so I can reuse these nodes in the office environment as a workstation/experimental host. I looked through materials available online and it appears that I will need to add pcie mezzanine cards. Different sources refer to 6YCP8 and/or 3N9XX so which one will I need or will I need both of them ?