CH341T module USB to I2C IIC UART USB to TTL single-chip serial port downloader | eBay
USB-ISS - Enhanced USB-I2C Module
I2C Shield for WiPy2 & LoPy With USB Programming Port - store.ncd.io
LinkM - USB to I2C - COM-09903 - SparkFun Electronics
USB to I2C Module
Amazon.com: USB to I2C USB to RS232 USB to Serial USB Converter Module Adapter Board : Electronics
DLN-2 USB-I2C/SPI/GPIO Adapter
ELV USB-I2C-Interface, Komplettbausatz inkl. Gehäuse, bearbeitet und bedruckt, USB-Kabel, 3 Anschlusskabel | ELV Elektronik | Bausätze | ELV Elektronik
DLN-2-U2C USB-I2C/SPI/GPIO Adapter (in U2C-12 compatible mode)
Amazon.com: EC Buying FT200XD CJMCU-200 USB to Serial Adapter USB to I2C Serial Module IIC Port TTL Level Input CMOS Output Transfer Convertor Serial Adapter : Electronics
USB-I2C interface module
USB-I2C/LIN-CONV-Z Analog Devices Inc. | Development Boards, Kits, Programmers | DigiKey