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What is DLPortIO?

DLPortIO.sys is a Windows driver. A driver is a small software program that allows your computer to communicate with hardware or connected devices. This means that a driver has direct access to the internals of the OS, hardware etc.
The free file information forum can help you determine if DLPortIO.sys belonging to the Windows system or an application you can trust.

Run a free scan to check for DLPortIO drivers in need of updating

DLPortIO.sys file information

The process known as DriverLINX Port I/O Driver belongs to software DriverLINX Port I/O Driver by unknown.

Description: DLPortIO.sys is not essential for the Windows OS and causes relatively few problems. DLPortIO.sys is located in the folder C:\Windows\System32\drivers. The file size on Windows 7/XP is 3,584 bytes. http://www.file.net/process/dlportio.sys.html 
The driver can be started or stopped from Services in the Control Panel or by other programs. There is no information about the author of the file. The program is not visible. The service has no detailed description. It is not a Windows system file. DLPortIO.sys seems to be a compressed file. Therefore the technical security rating is 53% dangerous; however you should also read the users reviews.

Recommended: Identify DLPortIO.sys related errors

Important: Some malware disguises itself as DLPortIO.sys, particularly when not located in the C:\Windows\System32\drivers folder. Therefore, you should check the DLPortIO.sys process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.


User Comments

DriverLINX Port I/O driver used by F2AWriter (GBA transfer utility)
device I/O on printer port
Part of the port95nt.exe driver for controlling parallel port, often used to control parallel displays
Kernel driver for allowing Port I/O from user mode
  Joey Jo Jo   (further information)
Redirected Port(Driver) for local PDF Printer
It is required by some microcontroller programmers contected to the printer port
  P Paradigm  
It is used by software developers who need direct port access on Windows without having to resort to using the complicated Windows SDK. The copyright holder is Scientific Software Tools Inc.
  dgh   (further information)
Parallel port driver allowing read and writes via their api. Provided (but no longer supported) by DriverLinx.
  Jordan Walters  
DLPortIO.SYS download
Its a linx parallel driver use o communicate with windows
Device driver for contolling I/O port. Written by Candian Technologies. I have been using this driver for years.
  Alan Taylor  
This is a driver used for the parallel port on your computer. If you use C++ or Turing, you will know what i mean. Its a driver needed for your parallelports...dont delete it.
Software running on Windows 98 or before can access parallel ports directly to control a piece of hardware connected to a parallel port. S/W running on NT, XP, or later needs something like DLPORTIO to simplify access to parallel ports.
  Advin Systems   (further information)
I use it for timing applications by viewing PPort bits

Rating chart

Summary: Average user rating of DLPortIO.sys: based on 30 votes with 15 user comments.
24 users think DLPortIO.sys is essential for Windows or an installed application. 2 users think it's probably harmless. 4 users think it's neither essential nor dangerous. 2 users don't grade DLPortIO.sys ("not sure about it").

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DLPortIO scanner

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Other processes

DLPortIO.sys [all]