U2irda Mini 4 Mbps Fir Usb Irda 20 Portable
Completely compliant with IrDA & USB 1.1 specifications. Supports modes: SIR (2.4Kbps…115.2Kbps), MIR (567Kbps…1152Kbps) and FIR (
Use irattach or irda-utils to bind the device.
The U2IRDA Mini 4 Mbps FIR USB IrDA 2.0 Portable is available for purchase from a range of online retailers, including Amazon, eBay, and other online marketplaces. It is also available from specialized electronics stores and computer hardware retailers. u2irda mini 4 mbps fir usb irda 20 portable
Unlike Bluetooth or Wi-Fi networks—which penetrate walls and are highly susceptible to RF jamming, hacking, or signal overcrowding—infrared demands strict, directional line-of-sight. This constraint inherently creates a highly secure point-to-point data link. It is mathematically impossible for an attacker to intercept the signal from an adjacent room, making it ideal for regulatory-compliant environments. Common Industry Applications
| Feature | U2IRDA Mini | Motherboard IrDA header | Old laptop IrDA | USB-to-SIR dongle | | :--- | :--- | :--- | :--- | :--- | | 4 Mbps FIR | Yes | Rare (most were SIR only) | Some (ThinkPad T4x) | No | | USB connection | Yes | No (needs proprietary cable) | Built-in | Yes | | Modern OS support | Good (Win 11) | None (obsolete chipset) | Varies | Limited | | Form factor | Keychain-size | N/A | Integrated | Similar | | Price | $20–40 USD | N/A | $50+ (used laptop) | $10–15 | Completely compliant with IrDA & USB 1
The U2IrDA Mini 4 Mbps adapter remains a staple tool across several specialized sectors: Industrial Automation and SCADA Systems
Fully bus-powered via the USB port (requires no external batteries or AC power adapters). Core Features and Engineering Highlights 1. Fast Infrared (FIR) Support up to 4 Mbps It is also available from specialized electronics stores
In today's world of wireless connectivity, Infrared (IR) technology has been around for quite some time, providing a reliable and efficient means of data transfer between devices. One such device that has gained popularity in recent years is the U2IRDA Mini 4 Mbps FIR USB IrDA 2.0 Portable. This compact and portable device allows users to transfer data between their computers and other IR-enabled devices, making it an ideal solution for those who need to exchange files on the go.
If you are planning to purchase or configure this adapter for a specific setup, tell me: What (e.g., Windows 10, Windows XP, Linux) are you targeting, and what specific device or meter are you trying to connect to? I can provide targeted driver or software recommendations. Share public link
Retrieving logs or data from IrDA-enabled medical instruments, industrial test equipment, and dive computers.
The device usually identifies as a “USB-to-Serial” or unknown device.

