F USB to TTL Adapter, USB to Serial Converter Featuring Genuine FTDI FT232RL 3.3V 5.5V USB TTL UART Arduino buy it!
$3.90-$4.20
30cm USB Cable for ardui UNOR3 Nano V3.0 Mega 2560 R3 USB2.0 to mini USB for ardui Blue Dual Shielding wirePrinter Cable buy it!
$0.18-$0.30
6FT USB to TTL FTDI Serial Cable 3.3v for computers equipment buy it!
$0.98-$1.47
FTDI USB to TTL 5V Serial UART Converter Cable buy it!
$0.15-$3.55
PL2303HX USB To RS232 TTL Auto Converter Adapter controller Module for arduino
$1.00-$5.00