What's included 1 - Embedded DisplayPort (eDP) Cable (formerly LVDS cable) This eDP cable for use with 4K Retina screens uses a cable with a 40-pin connection on the logic board and a 60-pin connection on the LCD panel. The non-Retina eDP cable has a 40-pin connection on the logic board but only a 30-pin connection on the LCD panel. Identifying Numbers APN : 923-00608 There are two eDP cables for 21.5" iMac computers released Late 2015 and this cable is only compatible with those that have Retina 4K displays. Compatible with iMac 21.5" Late 2015 A1418 (EMC 2833) - Compatible with iMac16,2 Retina 4K Late 2015: MK452LL/A (3.1 GHz Core i5) - Compatible with iMac16,2 Retina 4K Late 2015: BTO/CTO (3.3 GHz Core i7)

APN : 923-00608. The 4K Retina eDP cable can be identified by the pin-count on either end: a 40-pin connection on the logic board and a 60-pin connection on the LCD screen panel. There are two eDP cables for 21.5" iMac computers released Late 2015 and this cable is only compatible with those that have Retina 4K displays. The Embedded DisplayPort (eDP) cable transmits video data from the logic board to the LCD screen panel. eDP Embedded Display Port cable (formerly LVDS cable), Retina 4K (60/40-Pin) included.