How to make a usb to ttl cable. Jun 2, 2020 · The main USB to UART bridge IC is PL2303.

The TTL-232R-3V3-2mm uses a FT232RQ IC which is housed inside the USB ‘A’ connector, and is terminated at the end of a 1. Code examples ¶ In this section we provide examples on how to mark events from USB to TTL using popular programming languages (e. 1 inch Pitch Female Socket FT232RL Chip Windows 10 8 7 Linux MAC OS : Electronics Oct 4, 2009 · Note the "USB Serial Port" item with a designation of "COM3. The cables are available with a 6-way SIL, 0. 3V TTL Cable with Audio Jack Interface 6FT. 8 meter cable with RXD, TXD, RTS, CTS and GND signals provided This version of FTDI’s USB to TTL serial adapter cable has it’s I/O pins configured to operate at 5V levels. . The USB TO RS232/485/TTL is very easy to use, fully automatic transceiving without delay. 0 to TTL Module Serial Converter With Free cable Description: 1. 1″” pitch header socket which provided access to transmit (Tx), receive (Rx), RTS The USB to TTL Converter Cable allows us to connect any serial port to USB Device, thereby enabling the mobility. It's pretty simple, you only need a few components, PCB creating skills and SMD soldering. CP2102 USB 2. ; Select the “Search for and install the hardware automatically (recommended Now we open the device manager and look for our serial port. Check out FTDI TTL-232R-3V3 USB TO SERIAL CONVERTER CABLE, 3. 3V The TTL-232R cables are a Mar 20, 2022 · Enable the Show hidden devices option from the View menu. USB to Serial/TTL Adapter >>>Atmega328p. 5V/1. 3V TTL level UART signals. As shown in the pinout you have mixed up TXD (pin 8) and RXD (pin 10). -cp2102 serial adapter module supports usb to ttl, usb to rs232, usb to rs485, ttl to 232, ttl to 485, 232 to 485. 0 : Temperature Range -40℃ to +85℃ Packing List : 1*USB-TTL Serial Converter : Compatibility Jul 28, 2021 · How to Make a USB to TTL converter | DIY. 954 – USB to TTL Serial 3. In that project their connecting to a cheap NAS adapter what we care about is the Dec 13, 2017 · We'll be using a USB-to-TTL serial cable, which is much smaller and lighter than the serial cables of old. This PL2303 UART module is compliant with USB2. 5 Mbps : Key Function : USB-TTL : USB Interface : 2. serial UART cable and its 6-pin TTL connector as a regular serial device connection while the FTDI chip handles USB protocol. com: DTECH FTDI USB to TTL Serial 3. Inside the big USB plug is a USBSerial conversion chip and at the end of the 36" cable are four wire - red power, black ground, white RX into USB port, and green TX out of the USB port. 3-5V : Baud Rate : 300 bps to 1. 3V levels. 3 V TTL levels. 1” pitch 6 core, UL2464 24 AWG, diam=5mm TTL-232R-5V-WE** USB to UART cable with +5V TTL level The cable is the easiest way ever to connect to your microcontroller/WiFi router serial console port. May 15, 2022 · 3. 8V logic level UART connections and +1. We will respond within 24 hours. Adafruit sells such an adapter. Jul 6, 2017 · USB UART TTL +5V adapter cable, wire end USB2. Connect MCU easily to your computer! 2. UART interface IC device which handles all the USB signaling and protocols. 78 Ratings. Part Number Description End Connector* Cable details TTL-232R-5V** USB to UART cable with +5V TTL level UART signals. 1" connector TTL levels is 3. - Black Add SKU:297259 to wishlist Windows 10 Serial UART TTL Cable with FTDI. If you're not sure which you have, just install both drivers! There's no risk and the cable will work no matter what Handling the USB interface. Add to Cart. 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 Oct 6, 2018 · Buy Suamdoen USB to 3. 0 to UART converter IC with associated circuitry integrated within the cable USB connector. 0 uart ttl adapter cable, +3. 3v logic level USB2. Thanks to its separated pins, this cable is a perfect candidate for powering, connecting, and accessing the login and debug console on the Raspberry Pi. 8V / 100mA rated power output. The TTL serial connections run at 3. Step 8: Connect the USB-TTL Cable to the WNR3500Lv2. Connect the USB port of FT232 to the USB port of the Android phone with the OTG adapter cable, and then connect to another FT232 and computer via the USB port. Mar 18, 2011 · Long time reader, first time helper ;) I'm going through the same hellish experience here with a Prolific USB <> Serial adapter and so far Linux is the easiest to get it to work. On the next dialog (Figure 2), select Browse my computer for driver software. help with stand in order to solder carefully the wires, be carefull as the connectos become very hot when you use the solder station This is a USB to TTL Serial Cable which allows for a simple way to connect TTL interface devices to USB. Buy locally from a partner. The detailed description of these pins is as follows. So I decided to make a USB to TTL converter. This simple USB to TTL Serial cable converts standard USB to TTL Serial. order your PCBs from JLCPCB only $2 for 5pcs 1-4 layer PCBs ;PCBA from $0 https://jlcpcb. I just want to build my own converter. 0 to TTL 5Pin Serial Adapter USB to TTL Serial Converter Module for UART STC 3. Stable and reliable chipset CP2102 3. ; Go to “Action > Add legacy hardware. 0 full speed support, 12M Standard pinput(6C): Orange-TXD, Yellow-RXD, Green-RTS, Brown-CTS, black-GND, Red-VCC FT232RL USB TTL wire end cable Support Win 7 8 10, Android, Mac, Linux, Win CE full range OS 6FT, PVC jacket Drivers are available which allow FT232RL devices to work with the following . Brands China Code: WR-USB-TTL MPN: Availability: Discontinued. Status LED for TX,RX ; CP2102 USB to TTL Transfer chip from Silicon Labs,Industrial chip, high quality, super stable. Aug 2, 2010 · FTDI TTL-232RG USB to TTL Serial UART Converter Cables build upon the existing FTDI family of USB to TTL cables by offering new versions to support an extended variety of voltage I/O levels. The outputs from this chip connect to the RX and TX pins on the microcontroller, and are generally suitable for use with other chips that operate Apr 17, 2014 · This short video is a tutorial on how to use an Arduino as a USB to TTL (also known as COM or RS-232) converter. Jun 22, 2020 · Amazon. Nov 17, 2015 · WitMotion USB-TTL Serial Converter Cable : Built-in Chip : CH340 chip : Driver : CH340 UART Driver : Cable Length : 1 meter : Current <500mA : Input Voltage : 3. 3V is a USB to Serial (TTL level) converter which allows the user to connect TTL interface devices to USB in a simple way Operating system support Drivers are available to download as follow: FTDI official website which allow FTDI devices to work with the following operating systems: Windows 10 32,64-bit Windows 8/8. DTECH USB to TTL serial UART converter cable provides a fast, simple way to connect devices with a 3. The chip handles all the USB signaling and protocol requirements, enabling an improved debug and development environment where kernel debug messaging can be accessed. It features embedded protection circuits such as power isolation, ADI magnetical isolation, and TVS diode, etc. 0 full speed support, 12M Standard pinput(6C): Orange-TXD, Yellow-RXD, Green-RTS, Brown-CTS, black-GND, Red-VCC FTDI FT232RL USB TTL wire end cable Support Win 7 8 10, Android, Mac, Linux, Win CE full range OS The cable works with all Windows and Mac OS versions including the latest Windows 10 and If you need a USB to TTL serial cable for your electronics projects, you can find it on Amazon. Order today, ships today. But it's rare for a computer to have a serial port anymore. This serial connection is a legacy hardware connector that has been used for decades. g. What is USB to TTL Device ?The SerialComm USB-TTL-5 is a high quality, high performance bi-directional port powered USB to 5V TTL converter in a 9 pin format This USB serial cable supplies +5V at up to 500mA along with TxD and RxD sginals -- no hardware handshaking. 3 out of 5 stars 53 Sep 21, 2020 · Compatibility: This USB to TTL cable is compatible with Windows 7, 8, 10 and various Linux OS and Mac OS ; Warranty:DSD TECH provide a 1 year warranty and lifetime technical support for this USB to TTL Serial Cable. Devices with a TTL level serial interface to USB. Amazon. Inside USB F 1001 a USB series “A” connector is used to make a connection to a USB Host or computer. The cable The FTDI cable is a USB to Serial (TTL level) converter which allows for a simple way to connect TTL interface devices to USB. It does not have the DTR/RTS wire nec I made a USB to TTL from CH340G and i would like to share it with you! It can be used to program microcontrollers like ATMega and such. 3V specifically with a Raspberry Pi with each serial pin broken apart. The cable has total 4 wires out and can also be used to supply 5V, 500mA power from USB port to your circuits and devices. 3 volts so hooking TX to RX, RX to TX and ground to ground makes the communications work. PL2303HX USB to TTL Serial Cable. The TTL-232R cables are a family of USB to TTL serial UART converter cables incorporating FTD’s FT232RQ USB to serial UART interface IC device which handles all the USB signaling and protocols. Jul 12, 2013 · DSD TECH USB to 3. Both (USB to Serial and USB to TTL) are using the PL2303 driver. 3V adapter cable, wire end USB2. if you have any questions, please feel free to contact us. 8 meter cable with a 2mm pitch header socket which provides access to transmit (Tx), receive (Rx), RTS The TTL-232R-RPi cable provides a USB to asynchronous serial data transfer path capable of supporting data rates from 300 bits/s to 3 Mbits/s at 3. -USB specification 2. Due to its fast communication, stability, reliability, and safety, it is an ideal choice for industrial control equipment and/or applications with high Aug 14, 2018 · The Adafruit TTL serial camera is a good example board (see the Fritzing diagram at the top of the page). Here is why I like more this RS232 to TTL adapter than the other one: can be used on a real RS232 port; it is a stable voltage level converter; can be used on USB port too (through USB to RS232 converter) NOTE: The FT232BL is made in China version, but function is same as original one. 1/10/ Mac OS X/Linux. 00. 0 full-speed controller, USB transceiver, and full-mode control signal. com/ESC In this video, I am showing how to Feb 26, 2020 · First a complete picture with "official" colored wires. -Press reset button close to 1 sec. in Green(RTS): This is a control output pin and is used to make a request for sending the data. Jul 11, 2017 · USB UART TTL +3. in: Buy FTDI TTL-232R-3V3 USB TO SERIAL CONVERTER CABLE, 3. Thanks to fiery for providing this picture to connect an USB to TTL serial adapter. USB TO RS232/485/TTL User Manual Version:V1. Wire ended output allow most flexible connection ; Connect directly to a microcontroller UART or I/O pins. This direct connect USB TTL adapter works with Windows 10 and earlier or Mac OS 10 X and Linux. Set the connection type to Serial. On the next dialog (Figure 3), locate to the downloaded folder by clocking browse. First make the following connections with the USB to Serial/TTL Adapter. In my system, he showed up as COM4. Please note This cable is not good for Arduino re-programming. 【Built-in PL2303TA Chipset】- this usb to ttl serial cable with built-in PL2303TA chip is easiest way ever to connect to your microcontroller/Raspberry Pi/WiFi router serial console port. 0 full-speed devices with an integrated transceiver. If you don't see that, plug in the cable and the Device Manager should refresh. 1” pitch female header. While you most likely know what USB is, TTL means transistor-transistor logic, a digital logic solution to process and interpret information. Pin Configuration of FT232RL USB TO TTL Converter. This cable is compatible with most devices and has a durable design. 0 device. $15. This is a USB to TTL serial cable, with a FTDI FT232RL usb/serial chip embedded in the head. From the product description on that page: The power pin provides the 5V @ 500mA direct from the USB port and the RX/TX pins are 3. TTL-232R-3V3 – USB to TTL Serial 3. We often use right angle headers on the Arduino Pro Mini to make connecting a serial bridge trivial. The power pin is broken out directly from the USB port and supplies 5VDC at 500mA while the RX/TX pins are 3. Jun 2, 2020 · The main USB to UART bridge IC is PL2303. 6 pin SIL, 0. USB Connector Pin details. Each TTL-232R cable contains a small internal electronic circuit board, utilising the FT232R, which is encapsulated into the USB connector end of the cable. The older cables use Prolific brand, the newer cables (as of 2017) use SiLabs brand. The FT232RL USB to TTL Converter has 6 pins. 1” pitch 6 core, UL2464 24 AWG, diam=5mm TTL-232R-3V3 USB to UART cable with +3. 3V TTL level serial interface to USB port. Drew, Arturo Viale, Nevil Shute, Shin Godzilla, and Super Large Print, to find more interesting and enjoyable reads. Beli Kabel Usb To Ttl terbaru harga murah Juli 2024 di Tokopedia! ∙ Promo Pengguna Baru ∙ Kurir Instan ∙ Bebas Ongkir ∙ Cicilan 0%. 4. You can also browse other categories of books, such as Ana T. 3V. #Arduino #programming #electronics in this video, I am showing how I designed and made ch340 based USB to TTL converter version two Hi Enzo,-Try via and (powered) USB HUB sometimes new high speed computer USB outputs have some communication problems. USB UART TTL +3. 90' (1. 3V/2. Designed to be used for USB to TTL electronic projects, easy to connect to your MCU. Feb 5, 2022 · This module enables an asynchronous serial data bus (UART) with USB 2. Such as for data transmission, settings, debugging in various electronics devices. , Python). Note: More technical information can be found in the FT232RL Datasheet linked at the bottom of this page. NOTE Jul 21, 2014 · Erich Styger provided an excellent description of how to connect the FTDI-based Embest UART8000-U USB-to-TTL cable to the J18 interface on the RIoTboard in order to create a system console on a Windows host in the following post post will describe how to connect a Prolific-based JBtek/Adafruit USB Just about all electronics use TTL serial for debugging, bootloading, programming, serial output, etc. the driver comes with a utility that verifies the chip version just go to the driver folder that was unzip earlier and run checkchipversion. 5mm 3. 1. 3 out of 5 stars About this item . Feature: USB to TTL Serial Cable are designed using the the standard FT232BL-chipset The cables provide a fast, simple way to connect devices with a TTL level serial interface to USB RX and TX LEDs indicator The cables are available with a 6-way SIL, 0. Dec 11, 2019 · This is an industrial USB to RS232/485/TTL isolated converter with the original FT232RL inside. 1″” pitch header socket which provided access to transmit (Tx), receive (Rx), RTS Adafruit Industries, Unique & fun DIY electronics and kits FTDI Serial TTL-232 USB Type C Cable [5V Power / 3. The I/O pins of this FTDI cable are configured to operate at 5V. The TTL-232RG-VREG1V8-WE uses a FT232RQ IC which is housed inside the USB ‘A’ connector, and is terminated at the end of a 1. However, since it was implied there you don't want to run "a full OS" but something else, you will have to decide what that "something else" is; something other than a full OS which runs python is very unlikely, however, so you may want to just dustbin that idea now. 0 to TTL UART 6PIN CP2102 Module Serial Converter. Whether to allow the APP to visit the USB device, click OK. 3V Logic (5V Power Pin) Cable Unshielded from Adafruit Industries LLC. 4 Connect using the Serial Cable. Highlights : USB TTL 232 485 can freely convert to each other : Key Function : USB-TTL, USB-RS232, USB-RS485, TTL-RS232, TTL-RS485, RS232-RS485 : LED Indicator : Yellow light flashing (COM port connection), red light flashing (data receiving), green light flashing (data Sep 29, 2017 · Actually it is an RS232 to TTL converter which I found better from my opinion than that USB to TTL adapter. exe we set it to COM5 and we click on "check" it will give you the chip you have since there are a lot of versions of the PL2303. Dec 21, 2015 · Compare Item USB to TTL Serial Cable> Add to compare Frequently Bought Together View Dual-RCA Male to Dual-RCA Male Stereo Audio Combo Cable 12 ft. Lots of converters are available in the market for low prices like CP2102, F2232R, PL2303 and CH340. 80m) Unshielded from FTDI, Future Technology Devices International Ltd. 3V Adapter Cable TX RX Signal 3 Pin 0. This PL2303 UART module is a USB to TTL UART Converter module which is based on PL2303 Bridge by Prolific Technology. Before we plug the USB cable attached to your Raspberry Pi into your Linux or Mac computer make sure a terminal is running and make sure the Raspberry Pi is off Adopt imported controller PL2303HX, which can stabilize the flash with high speed 500mA self-recovery fuse for protection Two data transmission indicator can monitor data transfer status in real time Reserve 3. 3V, 6WAY-Black online at low price in India on Amazon. +5V TTL output allows external logic to be powered from the USB port USB-TTL Converter Serial Cable - PL2303 Based - 4 Wire This 1 meter long USB-TTL Serial converter cable is the easiest way to connect serial TTL devices to PC using USB connector. The TTL-232R-3V3 uses a FT232RQ IC which is housed inside the USB ‘A’ connector, and is terminated at the end of a 1. The I/O pins of this cable are configured to operate at 3. There's two possible chipsets. Materials used in this video:USB Serial converter: http:// we now have to verify the installation, we see in the device manager that it has installed right and the it is set as COM5. A cable inside the USB connector does all of the conversion work, and is broken out to 4 individual connectors. com FREE DELIVERY possible on eligible purchases TTL-232RG-VREG1V8-WE: USB cable with wire-ended +1. 3VDC logic; making this cable compatible with both 3 To upload code to Arduino pro mini, esp12e or Atmel microcontrollers we need an external USB to serial or TTL converter. I have edited out the third part of your question since it is unrelated to the first two. The other end of the cable comes with the 6 pin SIL, 0. Step 8: Connect the USB-TTL Cable to the WNR3500L. 1″ connector TTL levels are 3. $9. Jan 28, 2011 · The Cable provides a USB to TTL Serial interface to 6-pin header. so I tried the following configuration (USB to Serial, RS232 to TTL and then to the device) And works perfect. This version of FTDI’s USB to TTL serial adapter cables has it’s I/O pins configured to operate at 3. 8K views 1 year ago #arduino #electronics #programming. ” Click Next. Description. For this I used a standard JAL USB serial library ; After the USB to Serial TTL converter is configured, the yellow LED will be turned on ; When a character is received from the USB it is copied to the serial interface ; When a character is received from the serial interface it is copied to the USB Oct 20, 2019 · 1. Inside the big USB plug is a USB<->Serial conversion chip and at the end of the 36" cable are four wire - red power, black ground, white RX into USB port, and green TX out of the USB port. 5V >>> 5V rail This cable is easiest way ever to connect to your microcontroller/Raspberry Pi/WiFi router serial console port. This is a USB 2. The power pin provides May 28, 2021 · Alternatives for FT232RL USB TO TTL Converter. 3V level for interfacing with the most common 3. In this section we supply a shopping list, build instructions, and example firmware to build a simple hardware to mark events from USB to TTL. Our boards have silkscreen labels of where the black and green wires of the FTDI TTL-232R cables would be. The cables provide a fast, simple way to connect. Download SerialTool_Android to the Android device, unzip it, and then install it. I was using a dedicated converter bought fro One side has a TTL-232R cable compatible 6 pin SIL, 0. 0 to TTL CP2102) 4. 1). The USB-2323TTLMOS provides a USB to RS232 port with 5V/3. The cable is easiest way ever to connect to your microcontroller/Raspberry Pi/WiFi router serial console port. 3V and 5V pin interface, easy for the DDWRT of different voltage system that needs power The entire board is coated by the high quality transparent heat-shrinkable sleeve, making the PCB Mar 9, 2012 · 3to5 dollar nokia usb cables on ebay have the same ftdi chip (or the prolific equivalent) in a neater board. 3V 5V. Jul 31, 2020 · 3-Foot PL2303TA chip USB to TTL serial adapter cable for 3. 3V Cable 5. 0 uart ttl adapter cable, +5v logic level USB2. The cables provide a fast, simple way to connect devices with a TTL level serial interface to USB. Mar 13, 2012 · Note the "USB Serial Port" item with a designation of "COM3. Use the 5ft. 1″” pitch header socket which provided access to transmit (Tx), receive (Rx), RTS#, CTS Sep 3, 2020 · FTDI cable USB to TTL serial adapter cable for 5V VCC logic level(3. 3V Logic] : ID 4364 - Just about all electronics use a UART serial port with RX and TX pins for debugging, bootloading, programming, serial output, etc. " You'll use this information in the next steps. . Country: Description Dec 18, 2012 · Next, install the latest drivers for the cable chipset. 1” pitch 6 core, UL2464 24 AWG, diam=5mm TTL-232R-5V-WE** USB to UART cable with +5V TTL level Dec 18, 2012 · USB to TTL Serial Cable - Debug / Console Cable for Raspberry Pi. Jan 23, 2018 · Yes, provided you are sure it is compatible. USB to UART cable with +5V TTL level UART signals. The table below depicts all the pin You can use the provided cables of the USB CH340G (it come with 6) only 3 is necessary, please use follow image to make correct connections. A USB-to-serial adapter or simply USB adapter is a type of protocol converter that is used for converting USB data signals to and from serial communications standards (serial ports). Programming the Raspberry Pi: Getting Started with Python. This side connects to the Arduino (TTL serial UART) board. 1 32,64-bit Windows Order today, ships today. FT234XD, UMFT201XB-01 XBee, TTL-232R-3V3, VNC1 Module VDIP1 . This cable is used for temporary USB to TTL Converter applications. in. List of commercial alternatives ¶ The TTL-232R cables are a family of USB to TTL serial UART converter cables incorporating FTD’s. 3V, 6WAY-Black reviews, ratings, features, specifications and more at Amazon. Standard USB type A male and TTL(TXD RXD) 232(232T 232R) 485(A B) 3. Jan 9, 2021 · Plug the USB converter cable, newest driver might be automatically installed. 1 pitch connector. USB specification 2. Aug 27, 2022 · A PC typically communicates with an Arduino such as the Uno via a USB cable that enters the board via a chip that does USB - serial conversion to allow use of the microcontroller's serial interface. We open putty and configure the connection. 【Wide OS Support】- this usb ttl serial cable is supported by most common OSes such as win XP/VISTA/7/8/8. 8 meter cable with a 0. Pricing and Availability on millions of electronic components from Digi-Key Electronics. This is a USB to TTL Serial Cable which allows for a simple way to connect TTL interface devices to USB. Note: Make sure the router is still powered off and unplugged from power when you do this. 3 V logic level serial communication (rx, tx, vcc and GND) The USB TLL serial converter is built with Prolific PL2303 chip, FTDI’s royalty-free VCP allow for communication as a standard COM port; a great conversion data cord to meet with your needs of debugging, boot-loading, programming, etc. 0 not 3. Apr 14, 2017 · USB to TTL Serial Cable Moyina USB-to-TTL (Serial) Cable 3. NOTE: If any installation or usage Nov 22, 2016 · This describes a very basic test procedure to verify that your serial adapter is fully operational. 8V TTL / CMOS compatible Logic levels. The FTDI cable is designed around an FT232RQ, which is housed in a USB A connector. It has real-time LEDs on the data lines that provide data transfer status in real-time. -You need to set the dip switches for different conversion purpose. Jun 9, 2017 · About this item . 3,Date:20181108 1 / 13 USB TO RS232/485/TTL User Manual Overview This is an industrial USB to RS232/485/TTL isolated converter with original FT232RL inside. The TTL-232R uses a FT232RQ IC which is housed inside the USB ‘A’ connector, and is terminated at the end of a 1. 95. 0, compatible with arduino,Windows XP/7/8/10 32bits/ 64bits, Linux etc. 0 full speed support, 12M Standard pinput(6C): Orange-TXD, Yellow-RXD, Green-RTS, Brown-CTS, black-GND, Red-VCC FTDI FT232RL USB TTL wire end cable Support Win 7 8 10, Android, Mac, Linux, Win CE full range OS The cable works with all Windows and Mac OS versions including the latest Windows 10 and For uploading code: 1. 3V) serial communication TTL-232R-3V3 It is built with FTDI FT232 chip, FTDI’s royalty-free VCP allow for communication as a standard COM port and D2XX ‘direct’ drivers provide DLL application programming interface; a great conversion data cord to meet with your needs of debugging, boot-loading, programming, etc. FTDI TTL-232RG cables feature the FT232R USB 2. com at a reasonable price. 5mm Audio Jack 5V TTL UART Serial Cable with FT232RL Chipset Works for LG HDTV LG Televisions Mazur PRM-9000, TTL-232R-5V-AJ: USB Cables - Amazon. 0 compliant with full-speed 12Mbps. Open Device manager, select the detected port, right click and select Update Driver (Figure. 3V logic level chipsets. go This USB to RS232 TTL/CMOS adapter cable eliminates that by allowing you to choose a voltage setting right at the adapter’s connection point at the terminal block. https://drive. 3V and 5V with Dupont Wire (USB 2. Inside the big USB plug is the CH340 USB -> Serial conversion chip and at the end of the 1-meter cable are four-wire:Red is power, or VCC, 5VDC; Black is ground or 0V; White is RXI input to USB's UART port, Receive input of USB's UART I'm trying to connect a device to my laptop using a TTL to USB converter like this one but it doesn't works. Most commonly the USB data signals are converted to either RS-232 , RS-485 , RS-422 , or TTL-level UART serial data. 3Pcs CP2102 USB 2. cg bw cr ch xr bk ps eh db kc