iMac 21.5″ A1311 Audio I/O Cable $12.00 A1311 – Late 2009 – Mid 2010 – Mid 2011 Select One Choose an optionABCClear iMac 21.5″ A1311 Audio I/O Cable quantity Add to cart Add to Quote Continue Shopping Category: A1311 (21.5" iMac) Late 2009-Late 2011 Description Audio input/output cable for the iMac A1311 A) Late 2009 21.5″ – 922-9127, 593-1086 B) Mid 2010 21.5″ – 922-9367 C) Mid 2011 21.5″ – 922-9801