U2irda Mini 4 Mbps Fir Usb Irda 20 Portable 2021 -

U2IRDA Mini is a portable USB infrared adapter designed to bridge data communication between a PC and IrDA-enabled devices like older mobile phones, PDAs, and medical equipment. Key Features High-Speed Transfer (FIR): Supports Fast Infrared (FIR) speeds up to , significantly faster than standard serial infrared (SIR). Multi-Mode Compatibility: Backwards compatible with (115.2 Kbps) and

Summary

Price

• Form Factor: Small dongle (typically 40–60mm long), USB-A plug, with a translucent IR window at the tip.
• Chipset: Usually SigmaTel STIR4200 or MCS7780 (or compatible). These are dedicated IrDA controller ICs that handle FIR encoding/decoding offloading the host CPU.
• Power: Bus-powered (5V from USB). Typical consumption ~150–200 mA during active transmission.
• Range: Up to 1 meter (FIR mode reduces range compared to SIR; clean line-of-sight required).

• No IR Remote support: This is IrDA data, not consumer IR (RC-5, NEC). It will not learn or send TV remote codes.
• Windows 10/11 64-bit: Native IrDA stack is deprecated. Many U2IRDA adapters stop working after Windows 8. Check chipset: MCS7780 has community Win10 x64 drivers; STIR4200 often fails.
• Throughput: Real-world file transfer max ~400–500 KB/s due to IrLAP overhead, not the full 4 Mbps raw.
• USB 1.1 compatibility: Works on USB 1.1 ports but will throttle to ~1.5 Mbps effective.

sudo modprobe mcs7780 # Check detection: dmesg | grep -i irda u2irda mini 4 mbps fir usb irda 20 portable

Angle and Distance:

For a stable connection, place the adapter within 1 cm to 100 cm of the target device. The optimal transmission angle is typically within 30° . U2IRDA Mini is a portable USB infrared adapter