linux如何查看usb几个

1. 使用命令行查看:在终端输入`lsusb`,可以查看当前连接的USB设备:

$ lsusb
Bus 001 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 002 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 003: ID 046d:c52b Logitech, Inc. Unifying Receiver
Bus 001 Device 004: ID 045e:0745 Microsoft Corp. Nano Transceiver v1.0 for Bluetooth

2. 使用图形界面查看:在系统设置中找到“硬件”,点击“USB”,可以查看当前连接的USB设备:

![usb](https://gitee.com/uploads/images/2018/0918/173737_f9d2f2a2_1395215.png “usb.png”)

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