When you connect the dongle to a Windows, Linux, or macOS host, the operating system typically recognizes it as a . Legacy IrDA stacks (like Microsoft's native IrDA driver deprecated after Windows 7) or third-party tools (like IrCOMM2k) can then bind to this COM port, enabling file transfers, printer connections, or modem emulation.
| Feature | Specification | |-----------------------|------------------------------------| | Form factor | USB Type-A mini dongle | | IrDA standard | IrDA 1.1 (FIR up to 4 Mbps) | | Supported speeds | 9.6 kbps, 19.2 kbps, 115.2 kbps, 576 kbps, 1.152 Mbps, 4 Mbps | | Transceiver | 875 nm IR LED + PIN photodiode | | Maximum range | 0.2–1.0 m (depending on angle) | | Host interface | USB 1.1/2.0 full speed (12 Mbps) | | Power | Bus-powered (< 100 mA) | | Chipset | SigmaTel STir4200 or equivalent | U2IrDA Mini 4 MBPS FIR USB IrDA 20
While widely supported on older systems, modern compatibility varies: When you connect the dongle to a Windows,
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