84,488,480 programs installed

Should I remove O2Micro Flash Memory Card Reader Driver x86?

What percent of users and experts removed it?
1% remove it99% keep it
Overall Sentiment
What do people think about it?
(click star to rate)
How common is it?
Global Rank #7,161
United States Rank #11,352
Reach 0.0592%
Lifespan of installation (until removal)
< 28.00 days
825.98 days >
Average installed length: 433.99 days


3.28 3.94%
3.27 9.17%
3.25 3.34%
3.24.1 5.48%
3.24 3.60%
3.23 25.88%
3.22 7.80%
3.21.1 14.57%
3.21 0.94%
3.20 0.09%
3.19.1 21.25%
3.17 3.94%

Typically installed together

O2Micro Flash Memory Card Reader Driver x86

What is O2Micro Flash Memory Card Reader Driver x86?

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 3.23, 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. The main program executable is o2flash.exe. The software installer includes 9 files and is usually about 2.62 MB (2,749,036 bytes).

Program detailsProgram details

URL: www.O2Micro.com
Installation folder: C:\Program Files\O2Micro Flash Memory Card Driver\
Uninstaller: MsiExec.exe /X{A800EE5E-D6BD-4326-BED1-F7ECBFBF91CE}
(The Windows Installer is used for the installation, maintenance, and removal.)
Estimated size: 2.62 MB

Program filesFiles installed by O2Micro Flash Memory Card Reader Driver x86

Program executable:o2flash.exe
Name:O2 MS1/MP1 Service
O2 Flash Memory Service
Path:C:\Program Files\O2Micro Flash Memory Card Driver\o2flash.exe
Additional files:
  • O2Icon_2.dll - O2Icon_2 Dynamic Link Library (O2Icon_2)
  • O2Icon.dll - O2Icon Dynamic Link Library (O2Micro_Icon)
  • o2sd.sys - O2Micro SD Reader Driver
  • o2media.sys - o2media
  • IntelClkRun32.exe - CLKRun Tool for Intel chipset

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 Flash Memory Card Reader Driver x86?

You can uninstall O2Micro Flash Memory Card Reader Driver x86 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 (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 x86.

Win Vista (SP2) 59%
Win 7 0%
Windows Service? Yes
(Installs a service)
Uninstall it 1%
Keep it 99%

Windows OS versionsWindows

Which Windows OS versions does it run on?
Windows Vista 66.41%
Windows 7 18.34%
Windows XP 13.71%
Windows 10 1.54%
Which OS releases does it run on?
Windows Vista Home Premiu... 49.44%
Microsoft Windows XP 13.46%
Windows 7 Ultimate 8.97%
Windows Vista Business 8.80%
Windows Vista Home Basic 7.08%
Windows 7 Home Premium 5.35%

Distribution by countryGeography

22.82% of installs come from the United States
Which countries install it?
  United States 22.82%
  France 14.00%
  United Kingdom 8.58%
  Germany 8.34%
  Italy 5.51%
  Australia 3.62%
  Spain 3.15%
  Iran 2.12%
  Canada 1.65%
  Portugal 1.57%
  Romania 1.42%
  Belgium 1.42%
  Austria 1.34%
  Brazil 1.26%

OEM distributionPC manufacturers

What PC manufacturers (OEMs) have it installed?
Toshiba 49.41%
Acer 22.01%
Dell 13.79%
Packard Bell 6.94%
Gateway 2.56%
ASUS 1.37%
Hewlett-Packard 1.37%
MSI 1.28%
Lenovo 0.91%
Medion 0.18%
American Megatrends 0.18%
Common models
TOSHIBA Satellite P300 18.72%
Acer Extensa 5630 8.19%
Dell Vostro1510 7.82%
TOSHIBA Satellite A300 5.68%
Acer Extensa 5230 5.40%
TOSHIBA Satellite U400 4.56%

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


user comment
No one has commented yet. Help others learn more about this software, share your comments.