Crucial 4GB DDR4-2666 UDIMM Memory

Crucial 4GB DDR4-2666 UDIMM Memory CT4G4DFS8266 Authentic Apple iMac memory modules, 4GB each, used for less than 6 months (from 2021). I also have other identical Apple memory modules totaling (4 × 4GB) = 16GB available for sale. Reason for sale: I performed a complete system upgrade due to video editing requirements. Hand delivery available in Lisbon/Évora/Montemor-o-Novo. Shipping also available by mail.