FTDI Serial TTL-232 USB Cable : ID 70 : $19.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Amazon.com: WITMOTION USB-UART 6-in-1 USB to Serial Converter, Multifunctional (USB to TTL/RS485/232, TTL-RS232/485, 232 to 485), Universal Adapter Module with CP2102 Compatible with Windows 7/8/10,Linux, Arduino : Electronics
Amazon.com: WITMOTION USB-UART 6-in-1 USB to Serial Converter, Multifunctional (USB to TTL/RS485/232, TTL-RS232/485, 232 to 485), Universal Adapter Module with CP2102 Compatible with Windows 7/8/10,Linux, Arduino : Electronics
DEBO RS232 TTL: Developer boards - RS232 to TTL, MAX3232 at reichelt elektronik
Ft232rl Ftdi Basic Usb To Serial For Arduino Pro Mini Download Cable Usb To 232 Ft232 Usb To Ttl Module Free Shipping - Integrated Circuits - AliExpress