lsusb - memory
Bus 004 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 002: ID 8087:0024 Intel Corp. Integrated Rate Matching Hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 5986:0401 Acer, Inc
Bus 001 Device 006: ID 03f0:8811 Hewlett-Packard
Bus 001 Device 008: ID 093a:2510 Pixart Imaging, Inc. Optical Mouse
Bus 001 Device 003: ID 058f:6254 Alcor Micro Corp. USB Hub
Bus 001 Device 002: ID 1058:0704 Western Digital Technologies, Inc. Passport External HDD
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub