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Small USB dongle with black ABS housing and exposed pins

NShi

NShi USB to I2C Adapter 5V 3.3V 500mA Bidirectional

SKU CH-ARW8-P1AKV

Converts USB to bidirectional I2C with 5V and 3.3V outputs up to 500mA, no external power needed

  • USB-powered operation — no external supply needed, delivers 5V and 3.3V up to 500mA
  • Bidirectional USB-to-I2C conversion — works as bus host or slave for IIC data and storage
  • Broad OS support — compatible with Linux, Android and other major systems
  • Built-in SMBus library — ready-to-use interface functions for development
  • ABS housing — impact and scratch resistant for long service life

USB-to-I2C bridge for developers and testers

The NShi adapter converts a standard USB port into a bidirectional I2C bus interface, allowing a host computer to act as master or slave on the two-wire serial bus. It draws power directly from USB and requires no external supply, making it convenient for bench work and embedded development.

Dual-voltage output and cross-platform libraries

The module supplies both 5V and 3.3V rails at up to 500mA with short-circuit protection, so target boards can be powered directly from the adapter. A provided function library supports SMBus operations on Linux, Android and other major operating systems, simplifying integration into custom test scripts or applications.

500mA current limit defines usable peripherals

The 500mA maximum output current determines which I2C devices can be powered and driven reliably; designs that draw more current will need a separate supply. Buyers who need to power higher-current I2C modules or charge batteries from the bus cannot use this adapter alone.

Highlights

  • USB-powered operation — no external supply needed, delivers 5V and 3.3V up to 500mA
  • Bidirectional USB-to-I2C conversion — works as bus host or slave for IIC data and storage
  • Broad OS support — compatible with Linux, Android and other major systems
  • Built-in SMBus library — ready-to-use interface functions for development
  • ABS housing — impact and scratch resistant for long service life

Specifications

No published specifications for this item yet.

Questions about this item

Will the 500mA output need a fuse replacement after a short circuit?

The adapter includes short-circuit protection on the 500mA rail, so no user-replaceable fuse is required.

What limits continuous operation on the 3.3V rail?

The 3.3V output shares the same 500mA total current budget, so sustained loads near that level will hit the current limit first.

Does the ABS enclosure get hot when the adapter runs all day?

The ABS housing is rated for impact and scratch resistance; with only USB power and no external supply, heat rise stays low during continuous use.

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