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The full-size SD card reader and the microSD card reader side by side at an angle, both black boards with metal card sockets and gold-plated header holes along the near edge, the microSD one under half the area of the other.
You have thissdset

SD Card Reader Set: microSD and full-size SD

Two 3.3 V card reader boards with the SD bus brought out in full. What the two NC pins really are, which of SPI, 1-bit and 4-bit to use, what each measured, and the wiring for all three.

Boards
2one of each
Supply
3.3V only
Start here · 01 Why a card and not the flash you already haveWhat is in the box

Product questions & answers ↓

The whole handbook11 articles · 55 minQuick referencePDF · 789 KBPinout and specsThe pin table, and the questions people ask first
In this box
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SD Card Reader Set: microSD and full-size SD

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Need another

Not on general sale yet. Reply to your order and we will sort out a spare — quote sdset.

Order or missing parts?

Email us or reply to your order, and quote sdset — that identifies the product. If something is missing from the bag, your order is the record of what shipped.

Take it with you

Point a phone camera at the code and this page opens there. It is the same address as the one printed on your box, so it is also what to show someone you are passing the board to.