Aggsoft
aggsoft.com › rs232-pinout-cable › RS232.htm
RS232 Port (DB-25). Pinout and Signals
Explore the complete pinout, wiring, and signal details for the RS232 DB25 serial port. Get the essential information you need to check or build a cable.
Metabee
metabeeai.com › home › blog › rectangular connectors › d-sub connectors › db9 to db25 pinout and wiring explained: how rs232 connections work?
DB9 to DB25 Pinout and Wiring Explained - MetabeeAI
February 25, 2026 - The DB9 to DB25 cable is designed to connect devices that use different RS232 connector types. It enables reliable serial communication between modern and legacy equipment. This cable is widely used in automation, telecommunications, and computer ...
How do I install my USB serial adapter in Windows XP? (.exe method)
Prior to installing this device, ensure that your operating system is up to date (for example, you have installed the most recent service pack). To install the driver: Download the latest drivers from the StarTech.com website ( http://www.startech.com/Support ). You can find the part number and product ID on the product’s packaging. Note: Windows will typically save the files to the Downloads folder that is associated with your user account (for example, C:\Documents and Settings\ your_name \My Documents\Downloads). Once the download is complete, right-click the zip folder that you downloaded,
startech.com
startech.com › home › add-on cards & peripherals › serial cards & adapters › icusb232db25
USB to Serial Adapter - USB RS-232 | DB9 | DB25
Serial communication is not working. Is the problem caused by the adapter or my serial software application?
Older applications that use serial communication often use legacy hardware addresses that do not work with PCI, PCIe, or USB to Serial products. We recommend contacting the software provider/support team to check if this is the case.
startech.com
startech.com › home › add-on cards & peripherals › serial cards & adapters › icusb232db25
USB to Serial Adapter - USB RS-232 | DB9 | DB25
How can I check if my USB device is properly detected by Mac OS?
To confirm that the Mac OS detects your USB device, complete the following: Click the Apple icon. Click About This Mac . Click More Info or System Report . Under the appropriate heading, confirm that your USB device is listed and that there isn't an error. For example, a network card would be under Ethernet Cards . You may need to refresh the System Information page after you plug in your device. To do so, press Command + R with the System Information page open. Your USB device is listed according to the name of the chipset. To determine the name of the chipset of your USB device, navigate to
startech.com
startech.com › home › add-on cards & peripherals › serial cards & adapters › icusb232db25
USB to Serial Adapter - USB RS-232 | DB9 | DB25
Videos
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How To Wire A DB25 Connector for Audio - YouTube
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RS-232 Explained: Working Principle, Pinout, Cables & Applications ...
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D-Sub Serial DB25 Tascam Macro Soldering Fast Way with pinout diagram.
07:15
Building an RS232 CNC Cable - YouTube
Making a RJ 45 - DB25 RS232 serial plug for Sun Server
Aggsoft
aggsoft.com › rs232-pinout-cable › serial-port-db25.htm
DB25 pinout and signals for the PC RS232 connector
Explore the DB25 pinout and signal configurations for RS232 connectors, essential for understanding PC COM and serial ports. Get detailed insights and diagrams here!
RS Online
docs.rs-online.com › 771e › 0900766b816b217a.pdf pdf
USB to RS232 DB9/DB25 Serial Adapter Cable - M/M Product ID: ICUSB232DB25
USB powered; No external power adapters needed · • · Supports serial transfer speeds up to 250Kbps · • · Includes a DB9 to DB25 pin adapter for 25-pin RS232 serial · communication · • · Supports USB transfer speeds up to 12Mbps · • · Plug-and-Play and Hot Swap Support ·
StarTech.com
startech.com › home › add-on cards & peripherals › serial cards & adapters › icusb232db25
USB to Serial Adapter - USB RS-232 | DB9 | DB25
3ft (91cm) 1-Port USB to Serial Cable, DB9/DB25 RS232 to USB Converter, Prolific, USB to Serial Adapter
3ft (91cm) 1-Port USB to Serial Cable, DB9/DB25 RS232 to USB Converter, Prolific, USB to Serial Adapter
Price $24.59
Virtual COM Port Driver
virtual-serial-port.org › virtual serial port driver › articles › what is serial port › rs232 pinout
All you have to learn about serial connector pinouts
October 3, 2024 - RS232 interface pinout. This article discusses the characteristics of the RS232 serial protocol and details the serial port pinout signals and their functions
Pccompci
pccompci.com › rs232-cable-technology.html
RS232 connector pin assignment - PCCOM
PCCOM RS232 RS422 RS485 Multi-port Serial card,Serial-TCP/IP Communication Product
Lammert Bies
lammertbies.nl › home › tutorials on computer interfacing › cables for data interfacing › rs232 serial cables pinout
RS232 serial cable pinout information - Lammert Bies
August 18, 2021 - Where the definition of RS232 focused ... of two DTE’s directly. ... The original pinout for RS232 was developed for a 25 pins sub D connector....
Startech
sgcdn.startech.com › 005329 › media › sets › ICUSB232DB25_Manual › ICUSB232DB25_QSG.pdf pdf
1 Port USB to RS232 Serial DB9/DB25 Adapter Cable
• Connect the DB9 to DB25 Serial Adapter to the USB · to RS232 Cable’s Serial DB-9 Port · 1 Port USB to RS232 Serial DB9/DB25 Adapter Cable - M/M · Package Contents · • · 3ft USB to RS232 Cable x1 · • · DB9 to DB25 Serial Adapter x 1 · • · Quick-Start Guide x1 ·
Electroniccircuitsdesign
electroniccircuitsdesign.com › pinout › rs232-db25-pinout.html
RS232 DB25 pinout
RS232 DB25 pinout description Pin No. Name Dir Notes/Description 1 - - Protective/shielded ground
Digi International
digi.com › support › knowledge-base › edgeport-rs-232-db9-and-db25-pinout-information
Edgeport RS-232 DB9 and DB25 pinout information | Digi International
Select your product for firmware, drivers, software, knowledge base articles and manuals
Electronic Theatre Controls
support.etcconnect.com › faq
RS 232 Pinouts for DB25 and DB9 Connectors - Electronic Theatre Controls Inc
January 21, 2025 - Skip to main content · ETCconnect · Forums · Find A Dealer · Contact Us · RS 232 Pinouts for DB25 and DB9 Connectors · Last updated · Save as PDF · Pins commonly used for RS-232 (serial): · Commonly used RS232 Null Modem Pin out for DB25 and DB 9 connectors:
Zytrax
zytrax.com › tech › layer_1 › cables › tech_rs232.htm
Tech Stuff - RS232 Cables and Wiring
We have received email suggesting that the above pinout looks like DTR from one side is driving into DSR/DCD on the other side - not normally a healthy situation. The emails miss the point that since this is a NULL modem connection both ends are DTEs. The two peer DTE's treat DSR/DCD signals as RX (INPUT) only. The INPUT DSR/DCD on one side is created by cross connecting the OUTPUT DTR signal for the other peer. Use when connecting a DB9 (e.g. a PC) to a DB25 (e.g.
Eltima
eltima.com › home › blog › rs232 pinout and specifications
USB over Ethernet, Virtual Serial Port, Serial to Ethernet Connector, Serial Port Monitor
1 month ago - In this guide, we’ll tell you the all about RS232 Serial Communication Protocol: RS232 Pinout and Specifications, RS-232 connectors types...
Arduino Forum
forum.arduino.cc › forum 2005-2010 (read only) › hardware › interfacing
DB25 to RS232 pin wiring - Interfacing - Arduino Forum
March 8, 2009 - hi all, i have a video switcher im connecting via rs232. attached is a picture of the pin diagram, apart from the obvious rx,tx and ground. how can i use the other pins to allow for better connection (common=async?)
All About Circuits
forum.allaboutcircuits.com › home › forums › hardware design › general electronics chat
[SOLVED] Plotter cable DB9 to DB25 pinout? | All About Circuits
August 20, 2021 - I'm trying to hook it up to a DB9, actually USB -> DB9 ->DB25. (the USB to serial outputs +-10v). I found a user manual and a service manual. I got the Tx and Rx pins figured out, but I can't figure out the pins for the flow control.
Nullmodem
nullmodem.com › DB-25.htm
DB-25 Connector - NullModem.Com
DB-25 connector pinouts for seriall, parallel and more
Romtronic
romtronic.com › home › rs232 cable pinout diagrams for embedded applications
RS232 Cable Pinout Diagrams for Embedded Applications | Romtronic
September 30, 2025 - Make sure the signal ground is connected (Pin 5 on DB9 or Pin 7 on DB25) to complete the circuit. With these pinout diagrams and tips, you’ll be able to wire RS-232 links confidently in your next embedded project.
Aggsoft
aggsoft.com › rs232-pinout-cable › modem-db9-to-db25.htm
RS232 Serial Modem Cable (DB9-DB25)
Pinout and signals for building a cable for RS232 serial modem (9pin - 25pin). Wiring diagrams and signal details included.