Brainboxes PX-235 1-Port PCI Express Serial Adapter

Discover dependable and straightforward RS-232 expansion with the Brainboxes PX-235 1-Port PCI Express Serial Adapter. This compact PCIe card adds a single high-performance serial port to your desktop or laptop system, delivering robust data throughput, reliable signaling, and a simple setup for legacy devices, test gear, industrial equipment, point-of-sale terminals, and instrumentation. The PX-235 is engineered to minimize latency and maximize throughput, making it an ideal choice when you need a steadfast serial connection without sacrificing space, compatibility, or power efficiency. Whether you are integrating legacy equipment into a modern workstation, running CNC controls, or maintaining a lab bench that relies on dependable serial communication, the PX-235 provides a seamless, future-proofed bridge between old and new technology.

• One RS‑232 serial port — The PX-235 provides a single, reliable RS‑232 interface for connecting legacy devices, barcode scanners, industrial controllers, and laboratory instruments without compromising space or performance on your motherboard. It’s a straightforward upgrade for systems that demand dependable serial communication rather than newer, less compatible interfaces.
• High-speed data transfer — Take advantage of data transfer rates up to 921.6 Kbps, enabling faster file transfers, quicker command responses, and smoother operation when streaming data from serial devices. This speed makes it suitable for real-time telemetry, data logging, and automation workflows where timing matters.
• 256-byte transmit and 256-byte receive FIFOs — The Deep FIFO buffers help prevent data loss during bursts and provide smooth, continuous communication with devices that generate irregular traffic. This design reduces the chance of overruns and underruns, improving reliability in busy systems or multi-tasked environments.
• 1 Mbit/s line drivers — Strong, stable signaling supports longer cable runs and challenging environments, ensuring clean edges and reliable bit transitions even in electrically noisy spaces. The robust line drivers help maintain data integrity across modestly lengthier connections typical of industrial setups.
• PCI Express interface for broad compatibility — Built as a PCIe add-in card, the PX-235 fits standard PCIe slots in desktops and compatible laptops with expansion capabilities, delivering a low-latency, high-bandwidth serial port without consuming precious system resources. It’s a practical, plug-and-play solution for upgrading aging systems or building versatile test benches.

Technical Details of Brainboxes PX-235 1-Port PCI Express Serial Adapter

• Product type: PCI Express serial adapter
• Serial port: 1 x RS-232
• Interface: PCI Express (PCIe) x1
• Data transfer rate: Up to 921.6 Kbps
• Transmit FIFO: 256 bytes
• Receive FIFO: 256 bytes
• Line drivers: 1 Mbit/s
• Compatibility: PCIe-equipped desktop systems and compatible laptops with PCIe expansion capability

How to install Brainboxes PX-235 1-Port PCI Express Serial Adapter

• Power down your computer and unplug it from any power source, then open the chassis to access the motherboard and expansion slots.
• Identify a vacant PCI Express slot (x1 or higher) on the motherboard. If you have a low-profile build, ensure you have the appropriate bracket or chassis support for the card.
• Gently insert the PX-235 into the slot until it is seated firmly. Secure the card with a screw to the chassis to prevent movement.
• Connect any required RS-232 devices to the card’s serial port using standard DB-9 cables or adapters, ensuring proper gender and grounding as needed for your device.
• Power on the system and install the latest drivers from Brainboxes' website or the included media. Follow the on-screen prompts to complete the installation, then reboot if required.
• After boot, verify the new serial port appears in your operating system’s device manager or hardware utility. Test connectivity with a terminal program or your serial device to confirm stable communication.

Frequently asked questions

• Q: How many serial ports does the PX-235 provide? A: It provides a single RS-232 serial port via a PCI Express expansion card.
• Q: What data rate does the PX-235 support? A: The PX-235 supports data transfer rates up to 921.6 Kbps, making it suitable for a wide range of serial devices and applications that require reliable throughput.
• Q: What interface or slot does it use? A: It uses a PCI Express (PCIe) x1 interface, designed to plug into a standard PCIe slot on compatible desktops and expansion-capable laptops.
• Q: Do I need special adapters or drivers? A: Yes, you should install the vendor-provided drivers to ensure the port is recognized and operates correctly. Drivers are typically available from Brainboxes' official site or included media.
• Q: Is the PX-235 compatible with laptops? A: It is designed for systems with PCIe expansion slots; while traditional laptops often lack internal PCIe slots, some laptops with express card or docking options may support compatible configurations. Please verify your system’s expansion capabilities before purchasing.