Does this have a 3.3v regulator on board? Can it be fed with 5v & be regulated to 3.3v for its operation? Looks like it does. I just want to be sure.

Yes, I was able to successfully connect these Micro SD Cards to the 5V source of Arduino Nano boards for various applications. Mine all work fine! They have been in use continuously for weeks at a time to store data for temperature/humidity, voltage, and GPS logging devices with no issues.

Will this work with an Arduino Nano?

It does, but I had to use 5V for VCC, and only certain pins will work for the other connections.

Will this work with a ESP32?

Yes. It works well in my interface card

What file systems are supported?

It depends on you operating system. The module (MicroSD Card Adapter) is a Micro SD card reader module for reading and writing through the file system and the SPI interface driver Installed on the arduino board.

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💡 Unlock seamless microSD integration — power your projects with precision and speed!

ROBUST SPI INTERFACE - Experience reliable, fast data communication with a standard 6-pin SPI interface driver.
CROSS PLATFORM SUPPORT - Compatible with Arduino UNO R3, MEGA 2560, Due, and general AVR microcontrollers for ultimate flexibility.
BUILT IN 3 3 V REGULATOR - Integrated LDO regulator ensures stable power and safe level conversion for your microcontroller.
PLUG PLAY INSTALLATION - 4 precision-positioned M2 screw holes guarantee effortless, secure mounting in any project setup.
UNIVERSAL MICRO SD COMPATIBILITY - Seamlessly read/write Micro SD & high-speed SDHC cards for versatile storage solutions.

The HiLetgo 5pcs Micro SD TF Card Adapter Reader Module offers a compact, reliable solution for reading and writing Micro SD and SDHC cards via a 6-pin SPI interface. Featuring an integrated 3.3V LDO regulator and level conversion circuitry, it ensures compatibility with 5V and 3.3V microcontroller systems like Arduino UNO R3, MEGA 2560, and Due. With four M2 screw holes for secure mounting, this module is designed for easy installation and robust performance in embedded electronics projects.

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Brand	HiLetgo
Package Dimensions	10.16 x 7.87 x 1.02 cm; 49.9 g
Item model number	3-01-0038-5PCS
Manufacturer	HiLetgo®
Series	3-01-0038
Colour	Blue
Standing screen display size	0.01 Inches
Screen Resolution	1920 x 1080
Resolution	1920x1080
Processor Brand	Shenzhen HiLetgo Technology Co., Ltd
Processor Count	1
Computer Memory Type	DDR3 SDRAM
Graphics Card Description	Integrated
Graphics Card Interface	PCI Express
Operating System	Linux, Mac OS, Windows
Are Batteries Included	No
Item Weight	49.9 g
Guaranteed software updates until	unknown

HiLetgo 5pcs Micro SD TF Card Adater Reader Module 6Pin SPI Interface Driver Module with chip Level Conversion for Arduino UNO R3 MEGA 2560 Due

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