The Brainboxes 2 Port RS232 USB to Serial Adapter delivers fast, reliable RS232 connectivity directly from a USB port. Designed for professionals who need dependable two-channel serial communication, it provides two independent RS232 serial ports on a single USB bridge. With data transfer rates up to 921,600 baud, sizeable FIFO buffers, and robust 1 Mbit line drivers, this adapter handles demanding applications—from industrial automation and scientific instrumentation to point-of-sale and data logging—without compromise. The high-retention USB connection ensures your laptop or PC stays securely connected, even on busy travel setups, while driver support across major operating systems makes installation effortless.

• Two RS232 ports on a single USB device – Add dual, fully independent serial channels to your computer, enabling simultaneous communication with two devices such as PLCs, modems, barcode scanners, or cash registers without juggling multiple adapters or USB ports. Each port operates as a separate serial channel, maintaining isolation and reliable data transfer for complex workflows.
• High-speed data transfer up to 921,600 baud – Perfect for applications that demand rapid, continuous data streaming. Whether you’re logging high-frequency sensor data, commanding machinery, or transferring large blocks of data between legacy equipment and modern systems, this adapter keeps pace with demanding serial workloads.
• Robust FIFO buffers for stability – The 128-byte transmit FIFO and the 384-byte receive FIFO minimize data loss during peak throughput or CPU load spikes. This generous buffering helps maintain steady communication and reduces the risk of dropped characters in busy environments, ensuring accurate and reliable data capture.
• 1 Mbit line drivers for clear signaling – Strong RS232 signaling improves integrity over longer cables and in electrically noisy settings. The high-drive capability supports longer runs to devices that require robust voltage levels, delivering dependable performance in industrial or lab environments.
• Secure, high-retention USB connection with broad OS support – The USB interface is designed for a secure, durable connection that stays put during use on laptops and desktop machines. It works with Windows, macOS, and Linux through provided drivers, enabling plug-and-play setup across diverse systems and reducing setup time.

Technical Details of Brainboxes 2 Port RS232 USB to Serial Adapter

• Ports: 2 x RS232 serial ports
• Interface: USB 2.0 High Speed, bus-powered
• Baud rate support: Up to 921,600 baud
• FIFO buffers: Transmit 128 bytes; Receive 384 bytes
• Line drivers: 1 Mbit signaling
• Power: USB bus-powered (powered by the host USB port)
• Compatibility: Windows, macOS, and Linux operating systems with supported drivers
• Port connectors: RS232 serial ports for standard serial communication
• Physical design: Compact, rugged enclosure suitable for desktop or field use

How to install Brainboxes 2 Port RS232 USB to Serial Adapter

• Connect the adapter to an available USB port on your computer. The device is designed to be bus-powered, so no external power supply is required for normal operation.
• Install the appropriate drivers for your operating system if prompted. Brainboxes provides driver support for Windows, macOS, and Linux to ensure full functionality of both RS232 ports. In many cases, modern OSes will auto-detect the device and complete the installation automatically.
• Once the drivers are installed, connect your RS232 devices to the two serial ports using standard RS232 cables. Ensure devices are powered and configured with compatible serial settings.
• Open your application or terminal software and configure each port (for example, COMx on Windows or /dev/ttyUSB0 and /dev/ttyUSB1 on Linux/macOS) with the required baud rate, data bits, parity, and stop bits. If you need hardware flow control, enable RTS/CTS as required by your equipment.
• Test the connection by sending and receiving data across both ports. If you experience issues, verify cable integrity, port settings, and ensure no conflicting device drivers are loaded for other USB-to-serial adapters on the same system.

Frequently asked questions

• Q: How many RS232 ports does this adapter provide?
  A: It provides two independent RS232 serial ports on a single USB-to-serial adapter.
• Q: What is the maximum baud rate supported?
  A: The adapter supports baud rates up to 921,600 baud for high-speed serial communication needs.
• Q: Which operating systems are supported?
  A: Windows, macOS, and Linux are supported, with drivers provided by Brainboxes to ensure full functionality.
• Q: Is the device bus-powered?
  A: Yes, the adapter is powered through the USB connection, eliminating the need for an external power supply for standard use.
• Q: Do I need special cables?
  A: You can use standard RS232 serial cables to connect devices to either port. Ensure cables are appropriate for the required cable length and signal quality.
• Q: Can I use both ports simultaneously?
  A: Yes. The design supports simultaneous operation of both RS232 channels for parallel communication with two devices.
• Q: Are there any driver-free (USB CDC) options?
  A: Availability of driver-free modes depends on the operating system and Brainboxes’ supported configurations; most users will install the official drivers for full functionality.