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In Windows 7 there is a sequence of mouse clicks on various icons which will display the buffer size of a given Com Port.

I can't remember that sequence at this moment.

I know I did it once before. Anybody remember this trick ?

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I like your style! –  mikezter Aug 25 at 21:18

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Do you mean to say going to Device Manager, right-clicking a COM Port entry, clicking on Properties, selecting the Port Settings tab and clicking the Advanced button to see the following dialog?

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Thanks for answering. The pic you pasted is all I've been able to find. I know perfectly well that I saw, on my own screen, a window which presented me with a display that showed that the receive buffer for Com31 was 4096 bytes. Maybe it was possible to edit it; I don't really remember. I know I saw that with my own eyes, but for the life of me I can't recall what I clicked to make it happen. Could it be something built into Visual Studio 2010 ? Is there some freeware utility that does this ? I am SO totally annoyed at myself for forgetting that mouse click sequence. –  User.1 Feb 8 '13 at 16:19

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