Adafruit USB MicroSD Card Reader/Writer - microSD / microSDHC / microSDXC
Deliveryfrom just 99p
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Comes with a handy little cord so you can attach it to your datalogger project. Also has a little plastic cover for the USB A connector part so it won't short against nearby electronics.
Max read speed is 16 MB/sec, max write speed is 6 MB/sec - most microSD cards are not this fast so the bottleneck will be the card, not the reader
Does not come with a microSD card! We do carry microSD cards in the shop that go great with the reader.