iMac sd card reader pinout

I am modding a broken iMac and turning it into a monitor, and I want to make use of the sd card reader but I don't know the pinout for the board. I want to make it so I can use it as a USB card reader.

Block Image

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 1
crwdns2934285:0crwdne2934285:0