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I am looking to upgrade my 128gb hard drive to a 1TB Solid state drive if possible as i want to use it for video editing. Is this possible? Everymac.com says the late 2013 macbook pro max ram it was sold with is a 512gb. I will be doing the work with a friend who has some experience with upgrading macs at home. thanks

Yes it is possible to replace with SSD 1TB.