
I have a small 1TB flash drive. I connected it to my Mac Pro via USB 3 and was only able to transfer data at 62.1 MB/s (write speed) and 151.9 MB/s (read speed). I got almost the same result on my new Macbook Pro with (Thunderbolt) with USB 3. For comparison, my very old 128GB USB stick has a write speed of 84.2MB/s and a read speed of 132.7MB/s. My WD My Passport 2TB SSD (USB 3) achieved 919.5 MB/s writing and 898.6 MB/s reading via USB 3.

Titan Gray Samsung BAR Plus 256GB USB 3.1 Flash Drive (MUF-256BE4/AM) with Up to 400MB/s Transfer Speed
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Compact and Convenient: SanDisk Cruzer Fit USB 32GB Flash Drive (SDCZ33-032G-A11)
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Samsung BAR Plus 128GB USB 3.1 Flash Drive - 400MB/s - Champagne Silver (MUF-128BE3/AM)
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Samsung BAR Plus 128GB - High-Speed USB 3.1 Flash Drive Titan Gray (MUF-128BE4/AM)
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π Seagate Backup Plus Slim STHN2000400 2TB Portable Hard Drive - Black: Your Reliable External Storage Solution
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Game console Microsoft Xbox One X 1000 GB HDD, black
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2 TB External HDD Western Digital WD Elements Portable (WDBU), USB 3.0, black
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18 TB External HDD Western Digital WD Elements Desktop, USB 3.0, black
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