The is a specialized USB-to-Infrared (IrDA) adapter designed for high-speed wireless data transfer between PCs and legacy devices. It is widely used for synchronizing medical equipment, industrial meters, and older mobile electronics. 🛠️ Key Technical Specifications IrDA Standard: Support for FIR (Fast Infrared) at 4 Mbps .
| Symptom | Likely Cause | Solution | |---------|--------------|----------| | No device detected | Driver not installed | Install USB-to-serial drivers (CP2102/PL2303). | | Slow transfer (<115 kbps) | Forced fallback to SIR mode | Check FIR compatibility in software. Set baud explicitly to 4 Mbps. | | Intermittent connection | Angle too wide or distance too long | Reduce distance to 10-15 cm. Align within ±10°. | | Fails after Windows update | Driver signature enforcement | Reinstall legacy driver in test mode or use IrCOMM2k. | | Dongle gets hot | High power draw or faulty transceiver | Disconnect immediately; unit may be counterfeit/low quality. | U2IrDA Mini 4 MBPS FIR USB IrDA 20
: Works with SIR (Serial IR) and MIR (Medium IR) standards, ensuring it can communicate with almost any IrDA-compliant device. U2IrDA Mini The is a specialized USB-to-Infrared (IrDA)
| Specification | Detail | |---------------|---------| | | IrDA 1.4 (FIR) | | Data Rate | 9.6 kbps, 19.2 kbps, 38.4 kbps, 57.6 kbps, 115.2 kbps (SIR), 576 kbps, 1.152 Mbps (MIR), 4 Mbps (FIR) | | Interface | USB 2.0 / 1.1 Full Speed | | Range | 0 to 1 meter (optimal at 20–50 cm) | | Angle | Cone of ±15° to ±30° (depending on transceiver quality) | | Power | Bus-powered (5V DC, <50 mA) | | OS Support | Windows 2000, XP, Vista, 7, 8, 10 (32/64-bit), some Linux kernels | | Chipset | Typically SigmaTel STIR4200 or Infineon (obsolete but functional) | | Symptom | Likely Cause | Solution |
Connecting to older printers equipped with infrared interfaces. Where to Buy & Support