Model	MicroSD Card Adapter v0.9b
Quantity	1
Color	Blue
Material	PCB
Features	Working voltage: VCC 4.5~5.5V; Current: 0.2~200mA; Interface electrical level: 3.3V / 5V; Onboard 3.3V voltage regulator circuit; Supports Micro SD up to 2GB; Micro SDHC up to 32GB; Leads: GND, VCC, MISO, MOSI, SCK, CS; SPI standard interface ; 4 M2 2.2mm screw installation holes
Specification	Greatly expands the Arduino memory
Application	For your DIY project
English Manual/Spec	Yes
Packing List	1 x Board

Control Interface:
A total of six pins (GND, VCC, MISO, MOSI, SCK, CS), GND to ground, VCC is the power supply, MISO, MOSI, SCK is the SPI bus, CS is the chip select signal pin

3.3V regulator circuit:
LDO regulator output 3.3V as level converter chip, Micro SD card supply

Level conversion circuit:
Micro SD card into the direction of signals into 3.3V, MicroSD card toward the direction of the control interface MISO signal is also converted to 3.3V, general AVR microcontroller system can read the signal

Micro SD card connector:
Since the bomb deck for easy card insertion and removal.

Positioning holes:
4 M2 screws positioning hole diameter of 2.2mm, the module is easy to install positioning, to achieve inter-module combinationimensions: 1.81 in x 0.94 in x 0.28 in (4.6 cm x 2.4 cm x 0.7 cm)