Woooooooow very very good and very good product im so happy and packaging super
I have make a remote control car
Product worked well for my Linux pc, no drivers needed, simple installation.
    
Micro:Bit Expansion Board Robotbit IOBIT V2.0
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This is a low-cost expansion board for Micro:Bit, which is specifically used for easy access of the IO ports on the Micro:Bit. It breaks out all the IO contacts on the Micro:Bit and comes with a built-in buzzer. The buzzer is connected to the P0 pin through the slide switch. The small size is very suitable for small projects using Micro:Bit.
Small size, very suitable for DIY; All IO ports are extracted; Two LEGO-compatible pin holes for easy assembly and integration; Includes 1A self-recovery fuse; Custom-designed silkscreen board On-board buzzer- you can directly use the music module in MakeCode to play music. At the same time, the 3.5mm audio connector on the board can be connected to audio equipment; such as headphones to have more creative endeavors The 3PIN interface is distinguished by yellow, red, and black. It is created so that plugging it in the wrong way is difficult, and it is convenient to plug in the sensors Compared with IObit1.0, the biggest difference is that it can input and output 5V, support 5V sensor use, and increases the drive capacity (can drive multiple 9g small servos) It imitates the 5PIN gold fingers on the Micro: bit. This is convenient for makers who like to use the alligator clips; Come with a 2 Section Battery Holder for power micro: bit.

| 
 Size  | 
 57mmx44mmx12mm  | 
| 
 Working voltage  | 
 3V-5V (5V sensor module is not supported under 3V power supply)  | 
| 
 Output current  | 
 3V and 5V power interface with maximum output 1A  | 
| 
 Serial port extraction  | 
 The serial port can map IO port  | 
| 
 I2C port leads  | 
 Pins 19 and 20 can only be used as I2C function pins  | 
| 
 SPI port leads  | 
 14, 15 (IO port can be read and written)  | 
Size
57mmx44mmx12mm
Working voltage
3V-5V (5V sensor module is not supported under 3V power supply)
Output current
3V and 5V power interface with maximum output 1A
Serial port extraction
The serial port can map IO port
I2C port leads
Pins 19 and 20 can only be used as I2C function pins
SPI port leads
14, 15 (IO port can be read and written)