Compact PCIe to USB 3.0 expansion solution with flexible power options Key benefits Enables USB 3.0 expansion from a small PCIe slot in compact or industrial systems Flexible power input options for compatibility with legacy hardware Suitable for industrial control motherboards that use a small PCIe port Clear, safe power handling guidance to prevent damage to connectors and cards Small form factor designed for spaceconstrained installations What it is Small PCIE to 19PIN USB3.0 expansion card Power input options: small PCIE 15PIN or floppy drive 4PIN power supply Designed to work where a compact PCIe interface is available and USB 3.0 connectivity is needed Compatibility and use Compatible with industrial control motherboards that have a small PCIe port Ideal for compact or embedded systems that require USB 3.0 without upgrading the motherboard Important usage note When plugging and unplugging the power cord from the floppy drive power socket, first lift the socket upward to disengage the locking button on the cord from the adapter card, and then unplug Key attributes Function: PCIe to USB 3.0 expansion with flexible power options Compatibility: Works with systems featuring a small PCIe port, including industrial control motherboards Size: Compact form factor suitable for spacelimited environments Performance: USB 3.0 compliant expansion for speed data transfer Safety: Includes a defined procedure to safely disconnect the floppy drive power connection Use scenarios Scenario 1: In an industrial control cabinet or compact control PC, add USB 3.0 ports without replacing the motherboard or chassis Scenario 2: In embedded or machine controller systems that use small PCIe ports, extend USB connectivity to devices such as USB flash drives, keyboards, or peripherals Scenario 3: In legacy or spaceconstrained systems that rely on 15pin power or 4pin floppy drive power connectors, provide a compatible USB 3.0 expansion path without major hardware changes This description maintains the original product scope and functions while presenting clear, customerfriendly details focused on what the card does, how it integrates, and practical ways to use it.