USB TTL Serial Cable Series
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USB to 3.3v TTL Header like TTL-232R-3V3

The Cable provides a USB to TTL Serial interface to 6-pin header
+3.3V output allows external logic to be powered from the USB port
Utilizes newest FTDI FT232R chip
Fully assisted hardware (RTS#/CTS#) or X-On / X-Off software handshaking.
OS Compatibi
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This USB to Serial UART (TTL level) adapter allows you to connect your computer through USB port and use it as a regular serial communication port. All USB protocol is handled within this adapter. There is no other device or programming required. 

Product Details: 
The adapter is perfect for embedded systems that require a serial connection to a computer. The board attaches directly to the USB bus via a standard type A receptacle connector. It shows up on any Windows computer as a standard serial COM port. Any applications that talk to this COM port is automatically convert to USB and back to UART to your target board. 

Additional Features: 
The Cable provides a USB to TTL Serial interface to 6-pin header. 
Single board USB to asynchronous serial data transfer interface 
Entire USB protocol handled by the electronics in the cable USB 
UART interface support for 7 or 8 data bits, 1 or 2 stop bits and odd / even / mark / space / no parity 
Data transfer rates from 300 baud to 3 Mbaud at TTL levels. 
Transmit and receive LEDs 
UHCI / OHCI / EHCI host controller compatible 
Low USB bandwidth consumption. 

6-Pin Header Assignment: 
Pin 1 GND 
Pin 2 CTS 
Pin 3 VCC 
Pin 4 TXD 
Pin 5 RXD 
Pin 6 RTS 

OS Support: 
Windows 98, Me, XP, 2000, 2003, CE, Vista, , and Windows 8 
Linux and Mac OS 10.X 

Package Contents: 
USB to 3.3v TTL PIN Header Cable 
Driver Disc