The link you shared is about SAS lane not PCIe lines. H755 have 16 SAS lanes which can be used to connect the drives. What I mentioned on my post is about PCIe line and how it is connected to the CPU. 
Hi, I need an information about the H755 PERC card: with a R350 server, the CPU (Xeon E-23xx) allows 20 PCI Express lanes. The H755 uses 16 lanes but has a specific connector and a specific location, so my question is = does the H755 take its 16 lanes on the 20 lanes available? If yes, so I can use only 4 lanes for another card (LTC, video card or network card) which needs only 4 lanes. And this is not good. I hope somebody will answer or explain me, and with good news ! Cedric
PERC H755 and PCIe