Pololu USB-to-Serial Adapter
USB adapter - Wikipedia
PL2303HX USB To RS232 TTL module
pic - A simple on-circuit RS-232 to USB converter - Electrical Engineering Stack Exchange
FT232RL USB to TTL Serial Interface Adapter - ProtoSupplies
hiletgo 5pcs usb to serial usb to ttl ch340 module with stc microcontroller download adapter - Newegg.com
how to connect usb to rs232 converter with msp430g2553 launchpad - MSP low-power microcontroller forum - MSP low-power microcontrollers - TI E2E support forums
Serial USB For Any AVR Microcontroller | Hackaday
Pl2303 Usb To Rs232 Ttl Converter Adapter Module Pl2303hx Stc Microcontroller Brush Machine Board - Integrated Circuits - AliExpress
5pcs/lot PL2303 USB To RS232 TTL Converter Adapter Module PL2303HX STC Microcontroller Brush Machine Board| | - AliExpress
Multi USB/RS232/RS485/TTL Converter
/i/65915/products/2019-04-19T15%3A06%3A17.037Z-IMG_20190419_101409560.jpg?1606306133 "ESP8266 Programmer with USB-Serial Adapter - V3.0 from BurgessWorld Custom Electronics on Tindie")
ESP8266 Programmer with USB-Serial Adapter - V3.0 from BurgessWorld Custom Electronics on Tindie
USB-COM232-PLUS1 - Ftdi - Adapter Board, FTDI Chip, USB to RS232
5pcs USB to Serial Port Multi-function Converter Module RS232 TTL CH340 SP232 IC Win10 for Pro Mini STM32 AVR PLC PTZ Modubs
From Arduino to Breadboard: which USB - FTDI to buy to upload sketches? - Installation & Troubleshooting - Arduino Forum
picprojects.net | RS232 Communication with PIC Microcontroller
USB to Serial Converter using AVR microcontroller - Electronics-Lab.com
Pl2303 Usb To Rs232 Ttl Converter Adapter Module, Pl2303hx Stc, Microcontroller, Machine Board - Integrated Circuits - AliExpress
RS232 to USB Converter With Arduino Due Or Mega 2560 - Copperhill
USB Serial UART Converter | Acroname
MICROCONTROLLER to PC Communication Via PL2303 (USB TO UART TTL) Converter : 4 Steps (with Pictures) - Instructables
USB to Serial USB to TTL CH340 Module with Microcontroller Download Adapter | eBay
