Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

  • Congratulations strongm on being selected by the Tek-Tips community for having the most helpful posts in the forums last week. Way to Go!

CAN I REMOVE SERIAL PORTS ? 1

Status
Not open for further replies.

bilko

Technical User
Nov 26, 2000
46
GB
I have nothing connected to my serial ports 1 and 2.
My modem is on com 3 so is it okay to remove them to free up some irq ?
 
Unlikely you will be able to remove them. But you should be able to disable them in your BIOS. Or with your setup disk if your computer is one of those.
Probably best to remove them with device mangler first , then cripple the CMOS entry on the next boot up. Ed Fair
efair@atlnet.com

Any advice I give is my best judgement based on my interpretation of the facts you supply.

Help increase my knowledge by providing some feedback, good or bad, on any advice I have given.

 
Boot to safe mode, remove them from device manager, restart, go into BIOS setup, disable them there, and you'll never see them again. Cheers,
Jim
iamcan.gif
 
Hey there, isn't COM3 logically cascaded to COM1 which both
inturn are connected to Physical serial port A (port 1) ?
So, if I do recall this to be so, then removing / disabling
Physical serial port A (port 1) you'll lose not only COM1
but, you'll lose COM3 too.

=SOF=
 
If your modem is plug and play you can safely remove the 2 com ports in bios because the modem will "emulate" a com port sometime it will emulate com5 but more then likely it will be com1
 
Any PnP device that needs a com port (modems) will assign themselves the next available port, AFTER any other device.
If the motherboard has both ports active, then com 3 will be taken by the modem (usually) and a separate IRQ assigned. This is normal PnP stuff.
If you DISable the onboard ports (com 1 and 2 (A and B)) they are then "free" for devices to use.
USR modems do like to use com 5 (even though there isn't supposed to be such a thing), but that's the nature of PnP.
Com 3 isn't necessarily "cascaded" from com 1, but they CAN share an IRQ (causing modems to give the error "Port Already Open").
Regardless of operating system, setting the BIOS "PnP Os Installed" to NO, can force peripherals to separate themselves better.
Things MUST be removed from device manager (in safe mode), before changing BIOS, fo that Windows can sort out it's resources better. Cheers,
Jim
iamcan.gif
 
Did what you suggested Jim and no problems so far.Modem is attached to com 4 and working fine.
Thanks Bilko
 
Status
Not open for further replies.

Part and Inventory Search

Sponsor

Back
Top