With IPHost Network Monitor you can run WMI Number Of Ports monitoring of various devices in your network.
To create a WMI monitor for Number Of Ports, provide host name (it must be a Windows host) and specify custom WQL query:
Number of downstream Ports on the Hub, including those embedded in the Hub's silicon. Individual USBPorts are associated with the Hub using the USBPortOnHub association.
The Win32_USBHub class represents the management characterisitics of a USB Hub.
IPHost Network Monitor is an advanced and easy tool for monitoring LAN and WAN networks, network servers, workstations and TCP/IP devices. Use IPHost Network Monitor to monitor your servers, domains, computers and devices.