Details:*This model ships with a 256 GB SSD by default, but it can be upgraded at the time of purchase to 512 GB, 1 TB, 2 TB, or 4 TB for an extra US$200, US$600, US$1400, or US$3400, respectively.
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If being able to ++upgrade++ the storage after purchase is important to you, you might prefer to purchase an earlier ++13-Inch++ or ++15-Inch "Retina Display" MacBook Pro++ as they all have upgradable storage and are available at much lower prices on the used market, as well.
'''Standard RAM''':16 GB*Maximum RAM:32 GB*
Details:*By default, 16 GB of RAM is onboard. It can be upgraded to 32 GB of RAM at the time of system purchase, but it cannot be upgraded later.
'''Standard Storage''':256 GB SSD*Std. Storage Speed:N/A
Details:*This model ships with a 256 GB SSD by default, but it can be upgraded at the time of purchase to 512 GB, 1 TB, 2 TB, or 4 TB for an extra US$200, US$600, US$1400, or US$3400, respectively.