USB 2.0 Type-A (backwards compatible with USB 1.1 ports).
In an age of Bluetooth and Wi-Fi 6, Infrared Data Association (IrDA) might seem obsolete. However, many industrial machines, medical devices, legacy test equipment, and even some niche consumer remotes still rely exclusively on IrDA for data transfer. u2irda mini 4 mbps fir usb irda 20 portable
Its name is a direct description of what it is and what it does: many industrial machines