820-2531-B 593-1041 922-9498 Reader, SD Card 21.5 Mid 2010 iMac A1311 NB-3163W
This is a replacement SD board for the Late 2009 - Mid 2010 iMacs. This is the reader for the Secure Digital memory cards.
Apple part number: 922-9498, 820-2531-B, 593-1041
Compatible models: A1311-Mid 2010-MC508LL/A, A1311-Mid 2010-MC509LL/A, 820-2531-B, 593-1041
Compatible Mac info. : 21.5-inch 3.06GHz iMac , 21.5-inch 3.2GHz iMac 820-2531-B, 593-1041
922-9498 Reader, SD Card 21.5 Mid 2010 iMac A1311 8202531B, 5931041