lsusb equivalent for Mac OS X

Open a new terminal and type:

system_profiler SPUSBDataType

The output should be similar to:

USB:

    USB 3.0 Bus:

      Capacity: 127.86 GB (127,864,930,304 bytes)
      Removable Media: Yes
      BSD Name: disk2
      Host Controller Driver: AppleUSBXHCIWPT
      Partition Map Type: MBR (Master Boot Record)
      PCI Device ID: 0x9cb1
      PCI Revision ID: 0x0003
      PCI Vendor ID: 0x8086
      Volumes:
        Music:
          Capacity: 127.85 GB (127,848,153,088 bytes)
          Available: 44.78 GB (44,783,632,384 bytes)
          Writable: Yes
          File System: ExFAT
          BSD Name: disk2s1
          Mount Point: /Volumes/Music
          Content: Windows_NTFS
          Volume UUID: 2C9542F9-CC12-35D1-866D-FF79A0BABC62