84,488,480 programs installed

Should I remove O2Micro Flash Memory Card Reader Driver Installerx86?

What percent of users and experts removed it?
2% remove it98% keep it
Overall Sentiment
What do people think about it?
(click star to rate)
How common is it?
Global Rank #17,220
United States Rank #27,023
Reach 0.0145%


3.16 1.75%
3.11 7.37%
3.10 1.40%
3.09 76.14%
3.08 8.07%
3.07 5.26%

O2Micro Flash Memory Card Reader Driver Installerx86

What is O2Micro Flash Memory Card Reader Driver Installerx86?

This is the software driver package for the installed O2Micro Flash Memory Card Reader. The driver package is required in order for the O2Micro Flash Memory Card Reader to function properly and is the software that allows your computer to communicate with this hardware device.


The most used version is 3.09, with over 98% of all installations currently using this version. It adds a background controller service that is set to automatically run. Delaying the start of this service is possible through the service manager. A scheduled task is added to Windows Task Scheduler in order to launch the program at various scheduled times (the schedule varies depending on the version). The software is designed to connect to the Internet and adds a Windows Firewall exception in order to do so without being interfered with. The main program executable is o2flash.exe. The software installer includes 7 files and is usually about 1 MB (1,052,751 bytes).

Program detailsProgram details

URL: www.O2Micro.com
Installation folder: C:\Program Files\O2Micro Oz128 Driver\
Uninstaller: MsiExec.exe /X{78764173-3805-4916-B3CE-B433702B8870}
(The Windows Installer is used for the installation, maintenance, and removal.)
Estimated size: 1 MB

Program filesFiles installed by O2Micro Flash Memory Card Reader Driver Installerx86

Program executable:o2flash.exe
Name:O2 MS1/MP1 Service
O2 Flash Memory Service
Path:C:\Program Files\O2Micro\o2flash.exe
Additional files:
  • o2sd.sys - O2Micro SD Reader Driver
  • o2media.sys - o2media
  • DIFxAPI.dll (by Microsoft) - Driver Install Frameworks API (DIFxAPI) (Driver Install Frameworks for API library module)
  • DPInst.exe (by Microsoft) - Driver Package Installer (DPInst) (Driver Package Installer)
  • O2Icon.dll - O2Icon Dynamic Link Library (O2Micro_Icon)
  • O2Icon_2.dll - O2Icon_2 Dynamic Link Library (O2Icon_2)

Program behaviorsBehaviors exhibited

Scheduled Task
  • DPInst.exe is scheduled as a task with the class '{9D7E6BB6-D452-4E75-96F0-43F9D85FCFCE}' (runs on registration).
  • o2flash.exe runs as a service named 'o2flash' (o2flash).
Windows Firewall Allowed Program
  • DPInst.exe is added as a firewall exception for 'C:\Program Files\PC Connectivity Solution\DPInst.exe'.

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 Flash Memory Card Reader Driver Installerx86?

You can uninstall O2Micro Flash Memory Card Reader Driver Installerx86 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 Flash Memory Card Reader Driver Installer(x86), 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 Flash Memory Card Reader Driver Installerx86.

Win Vista (SP2) 58%
Win Vista 0%
Windows Service? Yes
(Installs a service)
Uninstall it 2%
Keep it 98%

Windows OS versionsWindows

Which Windows OS versions does it run on?
Windows Vista 69.01%
Windows XP 21.13%
Windows 7 8.10%
Windows 10 1.76%
Which OS releases does it run on?
Windows Vista Home Premiu... 60.50%
Microsoft Windows XP 20.64%
Windows Vista Home Basic 5.34%
Windows 7 Home Premium 4.27%
Windows 7 Ultimate 3.20%
Windows Vista Business 2.85%

Distribution by countryGeography

18.36% of installs come from the United States
Which countries install it?
  United States 18.36%
  Germany 18.36%
  United Kingdom 6.56%
  Canada 5.25%
  France 4.59%
  Brazil 3.61%
  Sweden 3.61%
  Taiwan 2.62%
  Italy 2.62%
  Finland 2.30%
  Australia 2.30%
  Spain 2.30%
  Israel 2.30%
  Poland 2.30%

OEM distributionPC manufacturers

What PC manufacturers (OEMs) have it installed?
Acer 64.67%
MSI 21.20%
Medion 5.43%
Sahara 2.72%
Vestel 2.17%
Hewlett-Packard 1.63%
NEC 1.09%
Toshiba 1.09%
Common models
Acer Aspire 4920 9.89%
Acer Extensa 5420 7.98%
Micro-Star MSI Notebook V... 7.60%
Acer TravelMate 5520 6.08%
Micro-Star GX700 4.18%
Acer TravelMate 7520 3.80%

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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