: These have slots, though the 2018 model is difficult to access. Old MacBooks : Non-Retina models from 2012 and earlier. Non-upgradable models: All Apple Silicon (M1, M2, M3, M4) : The "Unified Memory" is built into the processor. MacBook Air : No MacBook Air model has ever had user-replaceable RAM. Modern MacBook Pros
: Every model (up to current) allows for some form of memory expansion. buy more ram for mac
Most modern Macs cannot have their RAM upgraded after purchase because the memory is integrated directly into the chip or soldered to the motherboard. iMac (27-inch) Go to product viewer dialog for this item. : These have slots, though the 2018 model