PI40952-3X2B is a specialized hardware component, specifically a PCI Express dual serial port adapter card . Primarily manufactured under the brand
(often associated with part number 89220), this adapter is designed to expand a computer's connectivity by providing two external serial RS-232 DB9 ports.
Below is an overview of its technical significance, hardware specifications, and driver requirements. Hardware Architecture and Functionality The card operates on the PCI Express x1
interface (Version 1.1), making it compatible with most modern motherboards that feature an open PCIe slot. At its core, the PI40952-3X2B utilizes the Oxford OXPCIe952 chipset
. This chipset is a high-performance solution that supports data transfer rates of up to 230.4 Kbps and is compatible with the 16C950 UART standard.
The card is frequently used in industrial and legacy environments where serial communication is still vital for connecting devices such as: Point of Sale (POS) systems: Scanners, receipt printers, and credit card terminals. Industrial machinery: PLC programming cables and CNC machines. Networking equipment: Console cables for switches and routers. Physical Design
To accommodate various system sizes, the card often features a Low Profile
design. It typically ships with both standard and low-profile brackets, allowing it to be installed in both full-sized desktop towers and Mini-PCs or Small Form Factor (SFF) workstations. Driver Support and Compatibility
For the PI40952-3X2B to function, the operating system requires specific drivers to manage the Oxford chipset. These drivers facilitate the communication between the hardware and the Windows COM port management system. Delock PCI Express Card to 2 x Serial
Description. The PCI Express card by Delock expands a PC by two external serial ports. Different devices such as scanner, printer, Delock PCI Express Card to 2 x Serial RS-232 + 1 x Parallel
Reviving Legacy Hardware: The PI40952-3X2B Serial Card Guide
Ever find a piece of tech in a bin and think, "I can definitely use this," only to be met with the dreaded "Unknown Device" yellow triangle? If you’ve dusted off a PI40952-3X2B (often found on Delock serial cards), you know exactly what I mean.
This little green board is a powerhouse for connecting legacy gear like industrial scanners, older printers, or even amateur radio equipment. But getting it to talk to modern Windows takes a specific secret sauce: the right driver. What is the PI40952-3X2B?
Technically, "PI40952-3X2B" is the board marking for a Delock PCI Express card. Under the hood, it typically runs on the Oxford OXPCIe952 chipset. This is the crucial bit of info—you aren’t looking for a "PI40952" driver; you’re looking for the Oxford OXPCIe952 drivers. Finding the Right Driver
Depending on your specific version of the card, you’ll likely need one of these two driver sets to get those RS-232 serial ports humming:
The Oxford (PLX/Avago) Driver: This is the standard for cards using the OXPCIe952 chip. You can often find these in the Delock Service Support area under Item No. 89219 or 89220.
The WCH Alternative: Some later revisions or similar multiport cards use WCH (Nanjing Qinheng) chips like the CH382. If the Oxford driver doesn’t stick, try the CH38XDRV package from the manufacturer's site. Why Bother in 2026? Why are we still talking about serial ports?
Industrial Reliability: Many CNC machines and specialized sensors still rely on the rock-solid RS-232 standard.
Low Latency: For hobbyists working with microcontrollers, a dedicated PCIe serial card often offers lower latency and better stability than cheap USB-to-serial adapters.
Sustainability: It’s better for the planet to keep perfectly good hardware running than to let it sit in a landfill. Pro Tip: The Manual Install
If the installer fails, don't panic. Go to Device Manager, right-click the device, select Update Driver, and point it manually to the folder containing the .inf file from your downloaded driver package.
Have you successfully integrated legacy serial hardware into your modern setup? Tell us about your "Frankenstein" rig in the comments!
Do you need help finding the specific download link for your exact version of Windows? Delock PCI Express Card to 2 x Serial
Description. The PCI Express card by Delock expands a PC by two external serial ports. Different devices such as scanner, printer, Delock PCI Express Card to 1 x Parallel IEEE1284
The PI40952-3X2B is a PCI Express expansion card typically used to add legacy RS-232 serial ports (and sometimes a parallel port) to modern computers. It is commonly manufactured or distributed by brands like DeLOCK. 🛠️ Key Specifications Interface: PCI Express x1. Ports: Usually 2 x Serial RS-232 (DB9 male).
Chipset: Often uses an Oxford or WCH chipset (e.g., WCH382L).
Data Rate: Up to 230.4 Kbps for serial and 1.5 Mbps for parallel.
Form Factor: Includes Low Profile brackets for small-form-factor PCs. ⭐ User Review Summary
Users generally find this card to be a "plug-and-play" solution for connecting older hardware like barcode scanners, industrial controllers, or older printers to new systems. Pros:
High Compatibility: Works with Windows versions from XP/7 up to Windows 11.
Reliable Chipset: Oxford chipsets are widely recognized for stable driver support in industrial settings.
Compact: The low-profile design makes it versatile for mini-PCs. Cons:
Manual Setup: Sometimes requires specific manual driver installation from a CD or manufacturer website if Windows doesn't auto-detect the older chipset.
Legacy Only: Primarily useful for older equipment; doesn't offer modern high-speed data benefits. 💾 Driver & Support
Latest Drivers: Microsoft WHQL Certified versions (v1.6.2025.05) are available as of early 2026 for Windows 11 and Server 2022. Linux: Supported in Kernel 4.15 or above.
💡 Pro Tip: If your card has a red stripe on the ribbon cable, ensure it faces the card bracket during installation for proper pin alignment. Delock PCI Express Card to 2 x Serial
Description. The PCI Express card by Delock expands a PC by two external serial ports. Different devices such as scanner, printer, Delock PCI Express Card to 1 x Parallel IEEE1284
If you cannot source the exact PI40952 3x2B driver (due to obsolescence or regional shortages), consider these drop-in or functional equivalents:
| Part Number | Channels | Control Type | Voltage | Current | Compatibility | |-------------|----------|--------------|---------|---------|----------------| | DRV8412 | 2 | 2x2B | 50V | 6A | Needs external logic for 3rd channel | | L6206 | 2 | 2x2B | 52V | 5.6A | Dual channel only | | TB6612FNG | 2 | 2x2B | 15V | 3.2A | Low voltage, not a direct replacement | | BD6231 | 1 | 2B | 32V | 3A | Use three ICs for 3 channels | | MC33887 | 1 | 2B | 40V | 5A | Robust, but single channel only |
For a proper 3-channel replacement, two DRV8412s or three MC33887s would be required. The PI40952 remains unique in its 3x2B monolithic integration.
VBB (motor power) – should be > 12V.VCC (logic) – 3.3V or 5V.EN pin is HIGH.CP1 and CP2 – should be ~VBB+10V (charge pump active).Using the Pi40952 3x2B in a 3-phase Brushless DC (BLDC) motor driver requires two units (providing a total of 4 channels, using 3).
The Setup:
Result: The driver successfully switched a 24V / 10A motor with minimal heating. The logic-level compatibility meant no level shifters were required between the 3.3V MCU and the 12V power stage.
The Pi40952 3x2B is a robust, "middle-weight" driver solution. It bridges the gap between weak GPIO direct driving and expensive industrial driver modules. It is an ideal choice for hobbyists and engineers building kinetic installations, robotics, or efficient power supplies.
Have you used the Pi40952 in a project? Let us know your frequency and load specs in the comments!
I’m unable to generate a specific technical report for "pi40952 3x2b driver" because that exact identifier does not match any widely documented electronic component, IC, or driver module in public datasheets or technical databases (as of my latest knowledge update).
However, I can provide you with a template report for a generic “3x2-bit driver” (likely meaning a 3-input, 2-output or 3-channel, 2-bit parallel driver) and guidance on how to complete it with real data if you have access to the part or its datasheet.
| IN1 | IN0 | OUT1 | OUT0 | |-----|-----|------|------| | 0 | 0 | 0 | 0 | | 0 | 1 | 0 | 1 | | 1 | 0 | 1 | 0 | | 1 | 1 | 1 | 1 |
(If not a buffer but a decoder/driver, adjust accordingly)
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