ibm x3550 m4

Hi, I have the above system with dual 8 code xeon's, and was wondering if it supports pcie bifurcation. I know the life slots and risers qualify as this, but I was hoping to purchase 2x x16 pcie to x4 nvme cards, so I could drive them direct. Also, I've see u.2 drives on eBay that can be plugged...

Hey Guys I'm trying to sell my trusty old Server the Lenovo x3550 M4. It comes with one Xeon E5-2620 V2 and 8gb SK Hynix ram. It has the second backplane for a total of 8 2.5 inch Drives installed(none included). The installed Raid controller is the M5110 with 512mb Cache and battery. My...