DFRobot Xbee USB adapter

This is a basic breakout board for the FTDI FT232RL USB to serial IC. The pinout of this board matches the FTDI cable to work with official Arduino and cloned 5V Arduino boards. It can also be used for general serial applications. DEV-09716

DEV-11814 - USB-to-Serial Bridge - µUSB-PA5, RoHS

FTDI basic breakout Arduino USB-TTL ASP, RoHS

BOB-12731

CP2102 USB to UART Module, USB micro connector

UART - USB converter based on the FT232RL chip with TX, RX, RTS and CTS lines led out to the pin connector, the remaining lines available on solder fields for pin connectors. Micro-USB socket. Voltage supply from 3.3 to 5 V. FT232 USB UART Board (micro)

The module allows you to send UART (TTL) bus signals to a computer via a USB port. The adapter operates based on the PL2303HX chip and is recognized in the computer as a virtual serial port

USB TO UART solution with USB Type A connector

ZL5USB is a USB-UART converter module based on Silabs CP2102. The module has small sizes, microUSB connector and it can works with the 2.5...5.5V signals.

BOB-13263

The cable is easiest way ever to connect to your microcontroller/Raspberry Pi/WiFi router serial console port. The power pin provides the 5V @ 500mA direct from the USB port and the RX/TX pins are 3.3V level for interfacing with the most common 3.3V logic level chipsets. Adafruit 954

Easy-to-use USB-to-Serial adapter based on the CH340G IC from WCH; works with 5V and 3.3V systems and should auto install on most operating systems without the need for additional drivers; uses the CH340G IC to quickly and easily convert serial signals to USB. DEV-14050

The CY7C65213 USB to UART serial breakout is designed to provide users with a means to access all available I/O pins on the IC, and to provide a 6-pin UART header that is compatible with other SparkFun breakout boards. This breakout has a microUSB connector and other support circuitry to get the IC quickly up and running. BOB-13830

WIFI-LPT100 Eval Kit module enables UART data transmission via WiFi, ultra low power consumption, encrypted communication

USB - UART converter based on the PL2303 chip