After a restart, the new COM or LPT ports should appear in your Device Manager under "Ports (COM & LPT)". Delock PCI Express Card to 2 x Serial

Two external RS-232 DB9 male connections operating up to 230.4 Kbps with a 128-byte FIFO buffer.

The "pi40952 3x2b driver" represents a class of small multi-channel peripheral devices. Solid driver design emphasizes clear abstraction layers, robust error handling, efficient batching, proper interrupt and power-management support, and thorough testing. The patterns described here apply to many embedded drivers and provide a roadmap for implementing a reliable, maintainable driver for this or similar devices.

If your card came with a CD/DVD, insert it. Otherwise, locate the driver file you downloaded online.

Sometimes requires specific manual driver installation from a CD or manufacturer website if Windows doesn't auto-detect the older chipset.

The is the required software component that enables modern operating systems to recognize and communicate with legacy PCI Express (PCIe) expansion cards featuring the PI40952-3X2B PCB designation . Primarily found on legacy-to-modern interface hardware manufactured by Delock (such as the Delock 89219 or similar multi-I/O adapters), this hardware typically relies on the foundational Oxford OXPCIe952 chipset to convert a PCIe x1 slot into legacy serial (RS-232 COM) or parallel (IEEE 1284 DB25) ports.

However, based on the naming pattern, here’s what’s likely happening:

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

(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.

Click . The operating system will scan the .inf configuration files, assign the communication protocols, and shift the device into the Ports (COM & LPT) section. Troubleshooting Common Connection Issues Yellow Exclamation Mark Persists