CH341A USB To UART IIC SPI TTL ISP EPP/MEM Parallel Port Converter Module Onboard Operating Indicator Lamp
UTS2210 USB to SPI SPI Master HID device MCP2210/ | eBay
Devantech USB to UART, I2C, SPI, serial adapter (USB-ISS) | Acroname
Source FT232H High Speed Multifunction USB to JTAG UART FIFO SPI I2C Converter Module on m.alibaba.com
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
USB to SPI breakout board using MCP2210 (Part 1) - YouTube
USB-to-SPI Master Converter - EEWeb
CSR USB-SPI Programmer – Oz Robotics
CSR USB-SPI programmer
USB to I2C/IIC/SPI/UART/TTL/ISP Adapter Module EPP / MEM Parallel Port Converter For Serial Brush Debugging
CSR USB SPI Programmer,USB-to-SPI Converter For Debug Manufacturers and Suppliers - Wholesale Products - FEASYCOM
Devantect USB to I2C, SPI and Serial interface - RobotShop
iConnectivity : USB HOST TO SPI CONVERTER MODULE
Parallel Ports Converter Module, Convertor Board 3.3V/5V Output Voltage USB To UART I2C SPI Interface For Industrial - Walmart.com