Archived from groups: microsoft.public.windowsxp.general,microsoft.public.windowsxp.hardware (
More info?)
Like I said originally, there is no COM4 shown in Device Manager.
Forgot to mention my computer has no physical PS/2, LPT or COM port -
only the modem has been assigned COM3 prior to adding the Bluetooth
dongle.
I did a search in the Registry and found COM4 is associated to the
Bluetooth dongle I added - for some unknown reasons it added an
"invisible" COM4 along side COM5 (that I can see listed in Device
Manager).
How can I remove this COM4? It is not even visible when I tick the
option to show hidden devices in Device Manager.
"R. McCarty" <PcEngWork-NoSpam_@mindspring.com> wrote in message
news:O4Ln6dfiFHA.3672@TK2MSFTNGP10.phx.gbl...
: Check Device Manager, Ports category. Most motherboards
: have at least one or perhaps 2 on-board Serial Ports on them.
: Defined as Serial-A & Serial-B. Modems have their own port.
:
: One of the "Oldest" PITA aspects of a Personal Computer.
:
: Ports can conflict, as they use Multiplexing where COM1 &
: COM3 share an IRQ but have different Addresses. The same
: holds true for COM2 and COM4.
:
: If your Ports Category shows COM1, COM2 - then you may
: need to enter BIOS setup and set Serial A/B to disabled to
: avoid conflicts, Unless you have physical connections to the
: Serial ports on the backplane of the computer.
:
: "PHiLiP" <@.com.hk> wrote in message
: news:%23kplrYfiFHA.3596@TK2MSFTNGP10.phx.gbl...
: > I'm using Windows XP Professional SP2.
: >
: > 1. Modem is using COM port 3
: > 2. There is no COM port 4 shown in Device Manager
: >
: > When I added my Bluetooth, I noticed it created a Serial port COM 5.
: > Out of curiosity, I tried to change it to COM 4, but only to find
COM 4
: > was being used.
: >
: > How do I find out what is using COM 4? Thanks.
: >
: >
:
: