Mac Specs > By Capability > Mac Storage Upgrade Compatibility Guide
A hybrid drive includes the best of both worlds: a hard disk drive and a solid-state drive. It takes advantage of the SSD’s responsiveness and the HDD’s capacity for comparatively low cost. In these systems, the SSD can act as a cache for data stored on the HDD, keeping copies of frequently used files for quick access. Nonetheless, if you want a MacBook Pro with that much storage but are constrained by your budget, you can simply buy an external SSD. With read/write speeds of up to 500MB/s, an external SSD might be slower than the internal PCIe SSD used by Apple on its 2018 MacBook Pro lineup but the performance hit is not going to be severe.
Storage info — details on speed, dimensions, and hard drive and SSD interface specifics — for all G3 and later Macs are organized below by category.
Some Macs have a hard drive or SSD that can be upgraded easily, others have storage that 'unofficially' can be upgraded with some effort, and still others have soldered storage that cannot be upgraded at all after initial purchase of the Mac. This section makes differentiation easy.
In general, be sure to purchase your hard drive or SSD from a vendor that has tested the storage it sells with your particular type of Mac to ensure full compatibility and ideal performance. Also, be sure always to read the complete specs page for a specific Mac as some compatibility is dependent on OS version, firmware, or other details.
Be sure to also see EveryMac.com's Mac Upgrades FAQs section for instructional Q&As to upgrade the storage and other parts in your Mac.
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Please note that the thumbnail images merely show one of the more representative Macs in a category. Many series also include other models with different designs.
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