The computer requires a device driver to tell it how to properly handle data communications with the USB port on the USB to serial converter.Ī data buffer is included within some USB to serial converters. The converter translates that data, through its serial port, to a serial hardware device. The computer sends data to and receives data from the USB port on the converter.
If a hardware device has an RS-232 serial connection, a USB to serial converter is usually used to connect the serial device to a computer’s USB port. In that case, the computer needs to have a device driver installed to properly communicate through the USB to serial converter. However, since most computers no longer provide a serial port, a serial hardware device will usually be connected to a computer via a USB to serial converter. If the hardware device has an RS-232 serial connection and is directly connected to a computer serial port, the computer does not require a device driver for that device. If the hardware device is connected to a computer via a wired or wireless IP network connection, the computer does not require a device driver for that device. When one of these meters is plugged into a computer, Windows automatically connects to the meter without requiring an external device driver. USB HID devices that are supported by Calman include the SpectraCal C6 Colorimeter and the X-Rite i1Display light meters. Other devices that comply with the USB HID spec are also recognized automatically by a computer and don’t require a separate device driver. A computer doesn’t require a separate device driver for USB HID devices because they are recognized and handled directly by the Windows operating system. The USB Human Interface Device (HID) class is a specification for computer peripherals such as keyboards, mice, and game controllers. The device driver tells the computer how to properly handle data communications between the computer and the hardware USB device. If the hardware device has a USB interface connection and is connected to a USB computer port, the computer needs to have a device driver installed (unless it is a USB HID device see below).
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