USB-I2C/SPI/GPIO/PWM/ADC Interface | $19.10 to $89.40
LinkM - USB to I2C - COM-09903 - SparkFun Electronics
DLN-2-U2C USB-I2C/SPI/GPIO Adapter (in U2C-12 compatible mode)
USB to I2C Module
USB to I2C Elite - I2C Tools
Amazon.com: JESSINIE FT200XD USB to Serial Adapter USB to I2C Serial Module IIC Port TTL Level Input CMOS Output Transfer Convertor Serial Adapter CJMCU-200 : Electronics