PL2303 USB UART Board (mini) PL-2303HX PL-2303 USB TO TTL Module/Drivers are available for Windows 98 to Windows 7 (32 bit and 6 - AliExpress
Retired, replaced by PL2303TA) PL2303HX USB-UART Serial Programmer – ElectroDragon
Amazon.com: Atnsinc 3Pcs CP2102 USB 2.0 to TTL 5Pin Serial Adapter USB to TTL Serial Converter Module for UART STC 3.3V and 5V with Dupont Wire (USB 2.0 to TTL CP2102) : Electronics
How to Send/Receive Data From UART in dsPIC30F & dsPIC33F - TurboFuture
CH340G USB to RS232 TTL module schematic (D-SUN-V3.0) · Nice Circuits - Electronics, 3d printing and robots
Arduino programming by USB to TTL converter - YouTube