U2irda Mini 4 Mbps - Fir Usb Irda 20 Portable
U2IRDA Mini 4 Mbps FIR USB IrDA Adapter (20cm Portable) – Complete Guide
Overview
The U2IRDA Mini is a compact USB-to-IrDA (Infrared Data Association) bridge adapter. It allows modern computers (laptops/desktops) to communicate with legacy devices that use infrared ports, such as old PDAs (Palm, HP iPAQ), feature phones (Nokia, Sony Ericsson), calculators (HP48), scientific instruments, and industrial equipment.
2. Hardware Design: Portable & USB-based
- 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).
What’s in the box?
- U2IRDA Mini adapter (USB plug with built-in IR transceiver)
- 20cm captive USB cable (short length – ideal for laptops and portable use)
- Driver CD or download link (depending on seller)
Introduction
Range: Effective line-of-sight communication up to 1 meter (3.3 feet). u2irda mini 4 mbps fir usb irda 20 portable
Final verdict: For its intended niche—9/10. Robust, portable, and true to the FIR specification. Keep one in your toolkit; your legacy devices will thank you. U2IRDA Mini 4 Mbps FIR USB IrDA Adapter
