1.8M FTDI USB TTL-232R-RPI FT232 TTL-232R-3V3 USB to TTL 4Pin Module Converter UART FTDI RS232 Serial Cable buy it!
$2.99-$6.98
OEM Micro USB Cable Power Charging Cable With ON/OFF Switch For Raspberry Pi 3/2/B - Black buy it!
$0.65-$0.99
USB to TTL RS232 Cable for Raspberry Pi TTL-232R-RPi FTDI buy it!
$6.30-$10.00
USB to RS485 Converter cable , USB-RS485-WE-1800-BT buy it!
$5.00-$10.00
USB to RS232 Serial Adapter Cable USB Male to DB 9Pin D-Sub 9 POS Male RS232 Converter Cable with FTDI Chipset
$4.00