Compatible with iMac 21.5" A1311 Late 2009 Mid-2010 Mid/Late 2011 series. Compatible Models with iMac 21.5" A1311: MC309LL/A, MC812LL/A, BTO / CTO, MC978LL/A, MB950LL/A , MC508LL/A. This attaches to the LCD panel and powers the backlight function of the screen, plug and play and NO soldering is required.
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