USB 3 to SATA SSD

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I just connected my late-2012 Mac Mini running Yosemite to a 250GB Crucial BX100 SSD using the StarTech USB 3.0 to SATA converter (http://www.startech.com/HDD/Adapters/USB-3-SATA-adapter-cable-with-UASP~USB3S2SA T3CB). According to Blackmagic, my write/read speeds are only 22/28 MB/s. What am I doing wrong???
 

chscag

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Your Mac's Specs
2017 27" iMac, 10.5" iPad Pro, iPhone 8, iPhone 11, iPhone 12 Mini, Numerous iPods, Monterey
Why would you think that connecting a SSD via an external bus USB 3 to SATA would give you the same speeds as the internal bus of your Mini? Your SSD will be limited to the read write speed of USB 3 and probably slower because of the SATA convertor.
 

bobtomay

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Texas, where else?
Your Mac's Specs
15" MBP '06 2.33 C2D 4GB 10.7; 13" MBA '14 1.8 i7 8GB 10.11; 21" iMac '13 2.9 i5 8GB 10.11; 6S
Still should be better than that...

Call StarTech
 

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