![]() ![]() After a morning of searching, my best bet is that it needs a firmware update (it's on EXT0BB0Q but the latest is EXT0DB6Q) and a good TRIM (which this adapter supports), but making those happen has proved.difficult for someone who has only Macs and Linux machines and no Windows machines. I'm still getting 100s of MB/sec read, but write performance varies between 1 and 30 MB/sec. I've repurposed this 840 SSD as an external drive using the StarTech USB31CSAT3CB (SATA-to-USB-C-3.1 adapter, which supports TRIM).įor a while, performance was great (100s of MB/sec read and write), but I recently reformatted the drive to erase some data that I don't want to keep around, and now write performance has tanked. I have a Samsung 840 EVO 750GB SSD that used to be the internal drive of a different MacBook Pro before its logic board died. ![]() ![]() I have a 2019 MacBook Pro running macOS Catalina. ![]()
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January 2023
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