Use Excel to retrieve and list Available com ports in a combobox

[ArnMan]

Hello,
I have been using Excel VBA to access a com port and do some functions with. Usually I have to find out what my port is and type the number in a cell, and my code takes it from there.
Is there a way to have a combobox that when it is dropped down, to list the available com ports for me to choose? Then I could select the com port I am using and let my code run with that. That way I wouldn't have to go into device manager to see what I have already.
Any help or direction would be greatly appreciated.

Thank you in advance

 

[ArnMan]

Here is a short sub I have that access my com port that I type in, so you can see what I am using to actually use the port with.

Private Sub CalVolts_Click()


    Dim nameArray As Variant, full As String, reading As String, command As String, mode As String, unitrange As String
    Dim fluke798 As Range
    
    Dim ioMgr As VisaComLib.ResourceManager
    Dim instrument As VisaComLib.FormattedIO488
    Dim sndBuffer As String
    Dim rcvBuffer As String
    Dim myCommStr As String
    Dim myStatus As Integer
    
   Set addstdvalue = Range("H2")
    Set ioMgr = New VisaComLib.ResourceManager
    Set instrument = New VisaComLib.FormattedIO488
    'myCommStr = "ASRL1::INSTR"
    'Set instrument.IO = ioMgr.Open(myCommStr)
    Set instrument.IO = ioMgr.Open("ASRL" & addstdvalue.Value & "::INSTR")
    
    ' Set serial interface-specific attributes...
    Dim serInfc As VisaComLib.ISerial
    Set serInfc = instrument.IO
    serInfc.BaudRate = 9600
    serInfc.FlowControl = ASRL_FLOW_NONE
    serInfc.Timeout = 10000
    instrument.IO.SendEndEnabled = True
    instrument.IO.TerminationCharacter = 10          ' could be 10 (line feed) or 13 (carriage return)
    instrument.IO.TerminationCharacterEnabled = True
    instrument.IO.Timeout = 10000
    
    'rcvBuffer = commQuery(instrument, "QM")       ' query the ID and place on the worksheet to let the user know it was found
    'rcvBuffer = Replace(rcvBuffer, vbLf, "")          ' strip off the carriage return
    'ActiveSheet.Cells(6, 10) = rcvBuffer
    
    instrument.WriteString "HC_GASUI_OFF;display upper,off;display middle, off;display lower, on;func lower,dcv"
    




End Sub