Solvline COM Port Redirector - Manual (Page 18)

COM Port Redirector Chapter 4. Using Redirector Control
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2. Multiple Port Changes (Config Multiports)
“Config Multiports” option allows changing IP address, port number, and protocol settings of multiple
ports at once.
Force Port Close
“Force Port Close” closes any COM port that fails to close in normal operation.
 When you click open COM ports, “Force Port Close” button is activated.
 Click “Force Port Close”