pi@raspberrypi:~ $ lsusb
Bus 001 Device 007: ID 0e8f:00a7 GreenAsia Inc.
Bus 001 Device 005: ID 1a2c:4d44 China Resource Semico Co., Ltd
Bus 001 Device 004: ID 067b:2303 Prolific Technology, Inc. PL2303 Serial Port
Bus 001 Device 006: ID 0424:7800 Standard Microsystems Corp.
Bus 001 Device 003: ID 0424:2514 Standard Microsystems Corp. USB 2.0 Hub
Bus 001 Device 002: ID 0424:2514 Standard Microsystems Corp. USB 2.0 Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

pi@raspberrypi:~ $ lsusb -t
/:  Bus 01.Port 1: Dev 1, Class=root_hub, Driver=dwc_otg/1p, 480M
    |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/4p, 480M
        |__ Port 1: Dev 3, If 0, Class=Hub, Driver=hub/3p, 480M
            |__ Port 2: Dev 4, If 0, Class=Vendor Specific Class, Driver=pl2303, 12M
            |__ Port 1: Dev 6, If 0, Class=Vendor Specific Class, Driver=lan78xx, 480M
        |__ Port 2: Dev 5, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
        |__ Port 2: Dev 5, If 1, Class=Human Interface Device, Driver=usbhid, 1.5M
        |__ Port 3: Dev 7, If 0, Class=Human Interface Device, Driver=usbhid, 1.5M
        |__ Port 3: Dev 7, If 1, Class=Human Interface Device, Driver=usbhid, 1.5M
pi@raspberrypi:~ $