PCI to PCI Express Adapter Card StarTech PCI1PEX1 — Host PCI to PCIe, PCI 2.3, Pericom PI7C9X111SL, 60×135×20 mm

The StarTech PCI to PCI Express Adapter Card (PCI1PEX1) converts a standard 32-bit PCI host slot into a PCI Express x1 output, enabling installation of half-height/low-profile PCIe x1 cards in systems with only legacy PCI expansion slots. The adapter is compliant with PCI 2.3 and is built around the Pericom PI7C9X111SL chipset. Its compact internal design (60×135×20 mm) and included spare full-size bracket provide a flexible physical fit for constrained server or desktop installations.

Advantages

This adapter allows reuse of existing PCI motherboard slots to support modern low-profile PCIe x1 expansion cards without modifying the host board. The Pericom chipset provides the necessary protocol conversion for stable operation while the included full-size bracket and low-profile bracket options ensure compatibility with a range of chassis types. Certification to CE, FCC and TAA standards supports deployment in commercial and regulated environments.

Suitable for

• Upgrading legacy servers and desktops to accept low-profile PCIe x1 cards
• Installing network, storage, or I/O add-on cards that are PCIe x1 form factor into systems with only PCI slots
• Environments with constrained internal space where low-profile cards are required

Key specifications

• Host interface: 32-bit PCI (PCI 2.3 compatible)
• Output interface: PCI Express x1 (low-profile physical slot)
• Chipset: Pericom PI7C9X111SL
• Form factor: internal adapter with low-profile and full-size bracket options
• Physical dimensions: 60 × 135 × 20 mm
• Weight: 0.032 kg
• Mounting: designed for internal installation in desktop or server expansion slots

How to use

Power down the system and disconnect power before installation. Remove the cover of the computer chassis and locate an available 32-bit PCI expansion slot. Insert the adapter into the PCI slot and secure it to the chassis using the appropriate bracket (low-profile or full-size) provided. Install the PCIe x1 low-profile card into the adapter's PCIe slot and fasten it to the adapter bracket. Reassemble the chassis, reconnect power and boot the system. Install or update drivers for the installed PCIe card as required by the card manufacturer.

Usage recommendations

Use the adapter to add low-profile PCIe x1 functionality in systems where motherboard modification is not possible. Ensure BIOS/firmware supports legacy PCI devices and check card compatibility with the host operating system. For reliable operation, avoid using this adapter with devices that require full PCIe x1 bandwidth-sensitive performance without verification, as the adapter provides a PCI-to-PCIe conversion and physical interface constraints.