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Adafruit FTDI FT232H Breakout, USB zu GPIO, SPI, I2C, UART, JTAG, serial, 2264 | eBay
About USB GPIO Modules | USB-GPIO | IoT GPIO Solutions | Products | taskit GmbH
32-channel USB GPIO Module w/ Analog Inputs - RobotShop
DLN-2C USB-I2C/SPI/GPIO Interface (system on chip)
8 Channel USB GPIO Module With Analog Inputs | Numato Lab
Adafruit FT232H Breakout - General Purpose USB to GPIO, SPI, I2C [USB C & Stemma QT] : ID 2264 : $14.95 : Adafruit Industries, Unique & fun DIY electronics and kits
8 Channel USB GPIO Module With Analog Inputs (NU-GP80001) with/without PULL-UP
USB-I2C/SPI/GPIO/PWM/ADC Interface | $19.10 to $89.40
Sinelec Technologies
Sinelec Technologies
SparkFun USB to Serial GPIO Breakout - CP2103 - BOB-00199 - SparkFun Electronics