1x Genuine Apple iMac 27" 5K Logic Board (2017, i7 4.2GHz, Radeon Pro 580 8GB). Genuine Apple iMac 27" 5K logic board pulled from a 2017 model. Tested and fully working. Model: iMac 27" 5K (2017). Graphics: Radeon Pro 580 8GB.
eBay