Identifying MCP600 pump head revisions ?
 

Hi I'm new to water cooling DIY jobs. I recently bought a 2nd hand Swiftech MCP600 pump. It's the first revision, but came with the revised/fixed pump head as well. Apparently, once the fixed pump head is installed it's like the MCP600 revised one 'S' serial ??

Anyway, problem is the original owner can't remember whether he replaced the fixed pump head on the MCP600 so not sure as to which pump head is the original and which is the fixed one.

Now how do I identify which MCP600 pump head is the fixed one and which is the original ?

They both look the same to a water cooling newbie

thanks guys :)

George