Apart from H345 and H755, R250 also support H355. If you are changing from S150 to H-Series controller you also need to have separate cables also based on what backplane you have on the server. You can refer below link for more details on this [URL]  
I have purchase 3 R250 servers. They don’t have an option for anything other than S150 raid. I am wanting to use RAID 1 for Hyper Vboot and RAID 1 for VMs. Am I at risk using the S150 raid? If so can I upgrade to H330 RAID?
R250 Raid S150