iMac 21.5″ A1311 – AC Socket EMI Filter Inlet $5.00 A1311 – Late 2009 – Mid 2010 – Mid 2011 – The power cord or cable plugs into this part Select One Choose an optionABClear iMac 21.5" A1311 - AC Socket EMI Filter Inlet quantity Add to cart Add to Quote Continue Shopping Category: Case & Internal Parts (Intel) Tags: 2009, 2010, 2011, a1311, ac, AC Inlet, AC Power Port, AC Socket EMI Filter, power port, power supply Description iMac 21.5″ – AC Socket EMI Filter – A1311 A) Late 2009 – 604-0663 B) Mid 2010 – Mid 2011 – 604-1122