4x usb 2.0意思

"4x USB 2.0" typically refers to a device or a system that has four (4x) USB 2.0 ports. USB (Universal Serial Bus) is a standard for connecting devices to computers and other electronic devices. The "2.0" in USB 2.0 indicates the version of the USB standard.

USB 2.0 is a widely used version of the USB standard that was introduced in April 2000 and has a maximum data transfer rate of 480 Mbit/s (or 60 megabytes per second). It is backward compatible with USB 1.1 devices and cables, but the data transfer rate will be slower when connected to a USB 1.1 device.

Devices with multiple USB ports, such as a computer's motherboard, a USB hub, or a gaming console, often advertise the number of USB ports they have, including the version of the USB standard supported by those ports. So, "4x USB 2.0" means that there are four USB ports that support the USB 2.0 standard. This allows users to connect four USB devices simultaneously, such as keyboards, mice, smartphones, external hard drives, or other peripherals, to the device that has these USB ports.