I want to add an SSD to the server (X7SB3 + 826E1-R800LPB) for OS drive. Will MCP-220-82601-0N work? I am concerned about blocking the SATA ports, since there are only 2, and I'll need at least 1 for the SSD.
Either MCP-220-82601-0N or MCP-220-82603-0N will works on E-ATX Form Factor. The X7SB3 is E-ATX so it should be fine.