Bus 004 Device 003: ID 0bda:0138 Realtek Semiconductor Corp. Bus 004 Device 002: ID 058f:b002 Alcor Micro Corp. Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub