Aporte original por: Dan ,
Sadly No, The RAM is soldered to the logic board and is not upgradable. Your only choice here is to exchange the logic board with one that has 8 GB which is not economical. It would be cheaper to buy a new system. Review this IFIXIT teardown: [guide|38266|MacBook Air 13" Early 2015 Teardown]. Jump to Step 7. The red outlined chips are the RAM chips.