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So many Dot4 ports

July 8, 2010 at 23:49:51
Specs: Windows 2000

Actually I have 4 USB ports but my Pc shows 7USB port and 16 Dot4 Ports every time I install a printer new USB or Dot4 port install. what is the solution of this problem?

See More: So many Dot4 ports

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#1
July 13, 2010 at 15:33:30

It's not a problem, and there is no solution required.

DOT4 ports are "virtual" ports used for functions in a multi-function device such as an all-in-one printer. You would expect at least one new DOT4 port for every function (e.g. fax, memory card reader, printer, scanner, etc) in a USB device you install.

16 ports does seem a bit high, but it does not necessarily indicate a problem. For example, if you had four multi-function printers currently or previously installed, that's about the number of ports you should see.

If you're still worried about this, post a list of the ports.


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#2
July 14, 2010 at 01:00:25

The ports mention in system are :
USB001,USB002,USB003,USB004,USB005,USB006,USB007 and
DOT4_001,DOT4_002,DOT4_003,DOT4_004,DOT4_005,
DOT4_006,DOT4_007,DOT4_008,DOT4_009,DOT4_010,
DOT4_012,DOT4_013,DOT4_014,DOT4_015,DOT4_016
Every time I connect any printer a new copy of printer install on a new port.Some USB printers install on DOT4 port rather then USB.If a printer install on DOT4 port printer print the document after 1-5 minutes if same printer install on USB it prints immediately Why? How to restrict the printer to install on USB only?

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#3
July 14, 2010 at 08:23:05

"How to restrict the printer to install on USB only"

You can't. As I said, DOT4 ports are virtual ports representing functions of a USB device. DOT4 ports are USB ports.

Try this.

disconnect all USB devices. In Device Manager, remove all DOT4 ports (you may need to show hidden devices to see them). Then reconnect/re-install your printer.

See if that helps. Specifically what you should expect is that only one set of DOT4 ports will be present after reinstalling.


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Related Solutions

#4
July 15, 2010 at 00:16:22

Some USB printers install on DOT4 port rather then USB.If a printer install on DOT4 port printer print the document after 1-5 minutes delay if same printer install on USB it prints immediately Why? What is the solution?

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#5
July 15, 2010 at 08:18:19

"Some USB printers install on DOT4 port rather then USB"

As I said, this is normal. DOT4 ports are USB ports.


"disconnect all USB devices. In Device Manager, remove all DOT4 ports (you may need to show hidden devices to see them). Then reconnect/re-install your printer."

have you done this?


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#6
July 15, 2010 at 23:14:54

When select show hidden devices there are no DOT4 ports display only
USB Universal Host Computer,
USB2 Enhanced Host Computer,
USB Root Hub,
USB2.0 Root Hub.
are display.

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#7
July 16, 2010 at 15:03:42

So you have no DOT4 ports installed then? I'm really not following you here.


also....


"disconnect all USB devices. In Device Manager, remove all DOT4 ports (you may need to show hidden devices to see them). Then reconnect/re-install your printer."

have you done this?


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#8
July 16, 2010 at 23:18:37

Yes I done this.
When I install a printer after removing all printers.The new printer instead installing on USB it install it at Dot4 port when USB ports are free.
As I mentioned you that When select show hidden devices there are no DOT4 ports display.
Only
USB Universal Host Computer,
USB2 Enhanced Host Computer,
USB Root Hub,
USB2.0 Root Hub.
are displayed.

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#9
July 19, 2010 at 08:34:23

So, once again, the DOT4 ports are virtual ports corresponding to individual functions of your USB printer.

Let's try a different approach. What is the make and model of your printer?


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#10
July 19, 2010 at 23:55:10

I have many printers here is the list:
HP1000,HP1010,HP1020,HP1015,HP1005,HP1160,HP1320,
HP2300,HP2420,HP3005,HP3015,HP3050,HP3600,HP3800,
HP4250,HP4350,HP5200,HP5500,
SAMSUNG ML-2550,ML-2551,SCX-4720FN,
EPSON EPL-6200

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#11
July 21, 2010 at 12:17:16

*facepalm*

ok. which one of those are you using to troubleshoot?

In any case, I suspect your speed issues might have to do with the large number of printers attached to your system. I recommend disconnecting all but one while you troubleshoot.


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#12
July 22, 2010 at 02:58:15

Every printer is doing this one time printer install on USB next it install on Dot4 Port.
I am also check for disconnect all but one while I am troubleshooting.

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#13
July 22, 2010 at 14:17:21

so pick a printer and let's stick with that.

Explain how you install a printer on a USB port, versus a DOT4 port.


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#14
July 30, 2010 at 01:12:19

Just connect the printer and system automatically detect it and then supply the path of the driver. that's it. Now only 1 USB port is display but Dot4 ports is still 17.

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