MOD-USB-RS232 (Olimex) USB TO RS232 CONVERTER

https://www.olimex.com/Products/Modules/Interface/MOD-USB-RS232/open-source-hardware

FEATURES

• MCU: PIC18F14K50 20-Pin USB Flash Microcontrollers with nanoWatt XLP Technology.
• Mini USB connector
• Status LED
• Male UEXT connector plus 10 pin cable for it
• RESET circuit
• FR-4, 1.5 mm, red soldermask, component print
• Dimensions: 35.70 x 25.83 mm (1.41 x 1.02")