Key benefits Adds USB 3.0 expansion by converting a small PCIe port to a 19pin USB3.0 header. Compact small form factor suitable for space constrained systems and embedded boards. Compatible with devices that use small PCIe ports and industrial control motherboards. Flexible power options through common small PCIe 15PIN or floppy drive 4PIN power supplies. What this product is Small PCIE to 19PIN USB3.0 Expansion Card. Compatibility and power options Power supply options: Small PCIE 15PIN or floppy drives small 4PIN power supply. Host compatibility: Industrial control motherboards with Small PCIE port are also suitable. Output interface: Small PCIE to 19PIN USB3.0 Expansion Card. installation and usage guidelines Power handling note: When plugging and unplugging the power cord from the floppy drives power socket, first lift the socket upwarding, disconnecting button on the cord from the adapter card, and then unplug it. Use scenarios Industrial automation systems: Add USB 3.0 connectivity to an industrial control motherboard that uses a small PCIe port, enabling reliable peripheral connections for sensors, data loggers, or HMI devices. Compact or embedded PCs: Expand USB 3.0 access in small form factor boards or SBCs that have limited PCIe space, without enlarging the system footprint. Maintenance and upgrades: Upgrade legacy systems with a small PCIe port to support modern USB peripherals, while remaining compatible with existing power schemes and front panel USB headers.