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Should I remove O2Micro 1394 OHCI Compliant Host Controller Driver?

What percent of users and experts removed it?
8% remove it92% keep it
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How common is it?
Global Rank #16,732
United States Rank #25,686
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O2Micro 1394 OHCI Compliant Host Controller Driver

What is O2Micro 1394 OHCI Compliant Host Controller Driver?

This is the software package that includes the required drivers, configuration and management utilities to support the O2Micro 1394 OHCI Compliant Host Controller.


It adds a background controller service that is set to automatically run. Delaying the start of this service is possible through the service manager. The main program executable is DPInst.exe. The software installer includes 6 files and is usually about 3.49 MB (3,657,278 bytes).

Program detailsProgram details

URL: www.o2micro.com
Installation folder: C:\Program Files\O2Micro\
Uninstaller: "C:\Program Files\InstallShield Installation Information\{AFC44A23-E6A8-4625-B6B1-23D438525D59}\setup.exe" -runfromtemp -l0x0409 -removeonly
Estimated size: 3.49 MB

Program filesFiles installed by O2Micro 1394 OHCI Compliant Host Controller Driver

Program executable:DPInst.exe
Name:Treiberpaket-Installationsprogramm (DPInst)
Path:C:\Program Files\O2Micro\DPInst.exe
Additional files:
  • o2flash.exe - O2 MS1/MP1 Service (O2 Flash Memory Service)
  • O2Icon_2.dll - O2Icon_2 Dynamic Link Library (O2Icon_2)
  • DIFxAPI.dll (by Microsoft) - Driver Install Frameworks API (DIFxAPI) (Driver Install Frameworks for API library module)
  • DPInst.exe (by Microsoft) - Treiberpaket-Installationsprogramm (DPInst) (Treiberpaket-Installationsprogramm)
  • KeyFD32.exe
  • O2Icon.dll - O2Icon Dynamic Link Library (O2Micro_Icon)

Program behaviorsBehaviors exhibited

  • o2flash.exe runs as a service named 'o2flash' (o2flash).

Program resource utilizationResource utilization averages

Memory:1.83 MB
21.09 MB average
Total CPU:0.0002988273%
0.031193% average
Kernel CPU:0.00023973%
0.016088% average
User CPU:0.00005909%
0.015104% average
CPU cycles/sec:104,906
8,062,084 average
I/O reads/min:5 Bytes
435.61 KB average

How do I remove O2Micro 1394 OHCI Compliant Host Controller Driver?

You can uninstall O2Micro 1394 OHCI Compliant Host Controller Driver from your computer by using the Add/Remove Program feature in the Window's Control Panel.
  1. On the Start menu (for Windows 8, right-click the screen's bottom-left corner), click Control Panel, and then, under Programs, do one of the following:
    • Windows Vista/7/8/10: Click Uninstall a Program.
    • Windows XP: Click Add or Remove Programs.
  2. When you find the program O2Micro 1394 OHCI Compliant Host Controller Driver, click it, and then do one of the following:
    • Windows Vista/7/8/10: Click Uninstall.
    • Windows XP: Click the Remove or Change/Remove tab (to the right of the program).
  3. Follow the prompts. A progress bar shows you how long it will take to remove O2Micro 1394 OHCI Compliant Host Controller Driver.

Win 7 (SP1) 75%
Win 7 9%
Windows Service? Yes
(Installs a service)
Uninstall it 8%
Keep it 92%

Windows OS versionsWindows

Which Windows OS versions does it run on?
Windows 7 84.33%
Windows 10 15.67%
Which OS releases does it run on?
Windows 7 Home Premium 59.40%
Windows 7 Ultimate 13.42%
Windows 7 Professional 9.40%
Windows 10 Home 6.04%
Windows 8.1 Pro 5.03%
Windows 8 Pro 1.68%

Distribution by countryGeography

29.87% of installs come from Germany
Which countries install it?
  Germany 29.87%
  United States 19.81%
  United Kingdom 5.97%
  France 4.09%
  Austria 3.77%
  Spain 3.14%
  Canada 2.83%
  Italy 2.83%
  Netherlands 2.52%
  Belgium 2.20%
  Russia 1.57%
  Australia 1.26%
  Poland 1.26%
  Sweden 1.26%

OEM distributionPC manufacturers

What PC manufacturers (OEMs) have it installed?
Acer 61.25%
Dell 14.02%
Toshiba 10.33%
Lenovo 8.86%
Hewlett-Packard 1.48%
MSI 1.11%
Sahara 0.74%
Packard Bell 0.74%
NEC 0.37%
Medion 0.37%
Gateway 0.37%
ASUS 0.37%
Common models
Acer Aspire 8943G 40.94%
Acer Aspire 8935G 10.74%
LENOVO IdeaCentre A300 8.05%
TOSHIBA Qosmio X500 2.68%
Dell Latitude D630 2.01%

About (from O2Micro International LTD.)

O2Micro International limited designs, develops and markets innovative power management and e-commerce components and systems for the Communications, Computer, Consumer, Industrial, and Automotive markets.
Publisher URL: www.o2micro.com


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