The eHome Infrared Receiver (USBCIR) driver is software used to enable the functionality of an IR (infrared) receiver connected to a computer via USB. The "eHome" part refers to a Microsoft-developed driver framework designed to handle infrared devices, often for use with remote controls, such as those used with Windows Media Center, and other infrared communication peripherals.

The USBCIR refers to a USB-based IR receiver, allowing devices to communicate with your PC via infrared signals. This can be useful for controlling media playback, managing volume, or interacting with the system in a similar way to how a TV remote control works with a TV.