Just that, it says 204 pin in the article about what ram my mid 2011 imac would accept, and says 204 pin. I'm assuming it's a typo and not that I have to break 36 pins off of something
It's correct as written. That iMac requires 204 pin SO-DIMMs and not 240 pin DIMMs.
Nope, they mean 204.
Maximum Memory 32 GB (Actual) 16 GB (Apple)
Memory Slots 4 - 204-pin PC3-10600 (1333 MHz) DDR3 SO-DIMM
Retrieving data ...