84,488,480 programs installed

Should I remove O2Micro Flash Memory Card Windows Driver?

What percent of users and experts removed it?
4% remove it96% keep it
Overall Sentiment
What do people think about it?
(click star to rate)
How common is it?
Global Rank #1,665
United States Rank #1,293
Reach 0.4071%
Lifespan of installation (until removal)
< 13.18 days
388.77 days >
Average installed length: 204.27 days


VersionDistribution 1.84% 0.01% 0.01% 0.05% 0.64% 0.05% 0.21% 0.10% 0.02% 0.09% 2.90% 0.10% 9.51% 0.01% 0.01% 1.26% 0.06% 0.04% 0.62% 0.05% 0.07% 0.01% 0.67% 0.98% 0.02% 0.15% 0.15%
3.00.0014 0.02%
3.00.0009 0.19%
3.00.0007 0.06%
3.00.0006 4.04%
3.00.0002 0.04% 0.01% 0.02% 0.14% 2.36% 0.04% 0.10% 0.90% 4.47% 0.14% 0.02% 1.46% 0.30% 0.51% 2.80% 0.04% 3.35% 7.79% 2.38% 0.02%
97 versions

O2Micro Flash Memory Card Windows Driver

What is O2Micro Flash Memory Card Windows Driver?

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, with over 42% 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 DrvInst.exe. The software installer includes 40 files and is usually about 4.87 MB (5,105,451 bytes).

Program detailsProgram details

URL: www.o2micro.com
Installation folder: C:\Program Files\O2Micro\
Uninstaller: "C:\Program Files\InstallShield Installation Information\{08D341E2-6FC3-4361-B18A-48E8AC004FEB}\SETUP.EXE" -runfromtemp -l0x0409 -removeonly
Estimated size: 4.87 MB

Program filesFiles installed by O2Micro Flash Memory Card Windows Driver

Program executable:DrvInst.exe
Name:DrvInst Application
O2Micro driver installation utility
Path:C:\Program Files\O2Micro\DrvInst.exe
Additional files:
  • o2sd.sys - O2Micro SD Reader Driver
  • o2flash.exe - O2 Flash Memory Service
  • DrvInst.exe - DrvInst Application (O2Micro driver installation utility)
  • O2Icon.dll - O2Icon Dynamic Link Library (O2Micro SD/MMC Icon)
  • O2Icon_2.dll - O2Icon_2 Dynamic Link Library (O2Icon_2)
  • KeyFD32.exe

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 Windows Driver?

You can uninstall O2Micro Flash Memory Card Windows 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 Flash Memory Card Windows 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 Flash Memory Card Windows Driver.

Windows Service? Yes
(Installs a service)
Uninstall it 4%
Keep it 96%

Windows OS versionsWindows

Which Windows OS versions does it run on?
Windows 7 64.15%
Windows 10 31.65%
Windows XP 2.21%
Windows Vista 1.99%
Which OS releases does it run on?
Windows 7 Professional 36.49%
Windows 7 Home Premium 15.33%
Windows 10 Home 15.02%
Windows 10 Pro 7.19%
Windows 7 Ultimate 6.72%
Windows 7 Enterprise 5.10%

Distribution by countryGeography

59.96% of installs come from the United States
Which countries install it?
  United States 59.96%
  Germany 5.12%
  France 4.00%
  United Kingdom 2.72%
  Canada 2.21%
  Japan 2.15%
  Italy 2.01%
  Australia 1.76%
  Netherlands 1.51%
  Belgium 0.99%
  Sweden 0.97%
  Spain 0.80%
  Poland 0.80%
  Israel 0.72%

OEM distributionPC manufacturers

What PC manufacturers (OEMs) have it installed?
Dell 65.46%
Lenovo 17.72%
Toshiba 11.15%
Acer 3.57%
NEC 1.98%
MSI 0.13%
Common models
Dell Latitude E6420 8.88%
Dell Latitude E6520 6.01%
Dell Latitude E5520 5.45%
LENOVO 80NV 3.96%
Dell Latitude E5420 3.58%

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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