iMac 21.5″, 27″, A1418, A1419 Internal Microphone $8.50 A1418, A1419 iMac 21.5″ & 27″ Late 2012 – 2015 iMac 21.5", 27", A1418, A1419 Internal Microphone quantity Add to cart Add to Quote Continue Shopping Categories: A1418 (21.5" iMac) Late 2012-Mid 2017, A1419 (27" iMac) Late 2012-Mid 2017 Description Internal Microphone Cable. Apple 821-00210 iMac 21.5″ A1418, Late 2012 – Mid 2014 iMac 27″ A1419, Late 2012 – Mid 2015