The Best External Hard Drives and SSDs for Mac in 2021. Looking to add storage, or for a smart way to back up your Mac? Here's what you need to know, along with our top-rated Apple-friendly drives. Operating System Mac OS Item Weight 5.17 pounds Package Dimensions 13.86 x 10.35 x 3.66 inches Color Silver Processor Brand Intel Processor Count 1 Computer Memory Type DDR4 SDRAM Hard Drive Interface Thunderbolt 3 Batteries 1 Lithium Polymer batteries required.
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