USB to TTL 4-pin Wire

A USB to TTL serial adapter cable for connecting to microcontrollers, single-board computers, and other devices with serial interfaces. Built around the PL2303 chip, this 1-metre cable provides reliable serial communication at 3.3V TTL levels.

Perfect for accessing serial consoles on Raspberry Pi, debugging embedded systems, or communicating with Arduino and other microcontrollers.

Key Features

• PL2303 Chip – Reliable USB to serial conversion
• 3.3V TTL Levels – Safe for most microcontrollers and SBCs
• 1 Metre Length – Comfortable working distance
• 4-Pin Header – 2.54mm pitch for easy breadboard and header connections

Pin Connections

• Red – 5V Power
• Black – Ground (GND)
• Green – TXD (transmit to target's RX pin)
• White – RXD (receive from target's TX pin)

Specifications

• Connector – USB-A to 4-pin 2.54mm header
• Logic Level – 3.3V TTL
• Cable Length – 1 metre
• Compatibility – Windows XP through Windows 10+

Ideal For

• Raspberry Pi serial console access
• Arduino and microcontroller debugging
• Embedded systems development
• Router and device serial recovery