Tech did check all and reset fresh install OS Montery for both mac
1)
MacBook Air "Core i5" 1.6 13" (Early 2015) 1.6 GHz Core i5
Model A1466
RAM 8 GB
Storage 500GB
sn ..cimq542ug944 $140
pickup(90248) and cash only
2)
MacBook Air "Core i5" 1.6 13" (Early 2015) 1.6 GHz Core i5
Model A1466
RAM 8 GB*
Storage 128 GB SSD
sn co25kkk7h3qd $130