Micro SD SDHC TF Card Adapter Reader Module Welded Pins with SPI Interface Level Conversion Chip Compatible with Arduino Raspberry PI 10pcs

As others have pointed out, the description about being compatible with 5V logic is wrong. This only works with 3.3V logic. If you happen to have an ESP32, which uses 3.3V, these are perfect. The printing of the pin labels is accurate and easy to read. In fact, the power pin is even labeled 3v3. It was surprisingly easy to get this wired up and have the microSD recognized in MicroPython.

Haven't tried the whole batch, but those I have used have worked just fine.

The board works and all is well, but BEWARE:The description is wrong, or misleading to the least. This particular offering (as seen in their pictures) is a straight micro SD card interface. Because regular MicroSD cards do not tolerate more than about 3.6V, do not feed or connect the SD card contacts to 5V signals.Please go by the pictures and people feedback. As the pictures show, it does not have any 5V to 3V regulator or voltage translator for any signals. This board is to connect to a system that is already 3V, with 3V supply and 3V signals. As always, Amazon may bundle product reviews together, so this review may end up showing up for a board that maybe does include a regulator, level translator, etc. My advise is to ALWAYS use your judgment, common sense, and intuition.As for details, it can all be inferred by the pictures, but in any case:- Card insertion: The socket used is not the smallest footprint version out there (but it's the most versatile!). I bet we would love the socket type that solders under it, so the card can go all the way in, but that is not this version of the board. This version uses a simpler socket where the soldering pads are on the side of the part (easy to de-solder, tap into contacts, etc.). The side effect of it is that the card does not insert all the way into the socket. When used, a memory is going to look like it's sticking half way out, making you feel or think that maybe it is not all the way in. There is nothing wrong with the socket, this is the way it is. There are many socket designs out there, and this is just one of them.- Insertion detection: As seen in the pictures, there are no eyelets for soldering anything other than power and SPI . Thanks to the cheaper socket used, someone skilled in soldering wire-wrap wires can easily tap onto the socket pads and implement card detection if desired (So nice!)Why oh-why the description is different from the product? I'm not the one to answer that, and I have to accept that I don't matter in their world, but also that, some times vendors may not be paying attention to the version of the boards they are (re)selling, or they refresh/consolidate the photos or description from another SKU, etc. and the description and photos do not match anymore. In this particular case, the product was matching the pictures when I made the purchase, and I'm personally so grateful for that!Note: At the time I wrote this review, Amazon was showing a video of a related product together with this one. What would you know! the video shows clearly a slightly larger form factor board with what I bet are the regulator and level shifter ICs in it (that this board does not have). Talk about confusing some shoppers. Let's not be just shoppers, lets be hackers. Lets do our homework twice, to save time, headaches, and bad vibes.Overall, I love this board. The more I tinker with it, the more I like it.Hope this helps,

No modification, direct use. I love the plug and play items!

I've used a bundle of these to record data; great value!

Don't use the larger cards that require 5V and have other dubious 'qualities'. These are 3V, no level-shifting, HSPI ready to go (D5,6,7,8).

Lower rating is for the inaccurate description only as the module is fine and usable otherwise.The description is off on several points as some other reviewers noted, which is unfortunate, but the hardware is fine for 3.3v operation only. This integrated nicely in an ESP32 based datalogger using the Arduino IDE with standard SD card libraries.I do like that there is a 3rd party generic model available for this style of module on the Grabcad -> Community -> Library site to make this easy to integrate into projects as shown in the attached image. I just heat staked it onto the 3D printed frame and moved along.

For a dollar each I knew I was taking a chance, but if your project is 3.3v you should be fine. I used them for the Flipper Zero Wifi Dev Board SD mod that justcallmekoko has a write up on and it works perfect.