Twinhead A3400 Driver Download (Official)

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Twinhead A3400 Driver Download (Official)
9 Ratings
323 Downloads

Supported Models

A3400 Driver

O2Micro OZ6729 PCI to PCMCIA Bridge Driver

O2Micro OZ6730 PCI to PCMCIA Bridge Driver

O2Micro OZ6812 CardBus Controller Driver

O2Micro OZ6832/6833 CardBus Controller Driver

O2Micro OZ6836/6860 CardBus Controller Driver

O2Micro OZ6912 CardBus Controller Driver

O2Micro OZ6922 CardBus Controller Driver

O2Micro OZ6933 CardBus Controller Driver

O2Micro/ROHM OZ6836/6860 CardBus Controller Driver

PCMCIA Card Services Driver

Manufacturers

Twinhead

Microsoft

O2Micro

Supported Operating Systems

Windows 2003, Windows XP, Windows 2000, Windows NT4, Windows ME, Windows 98SE, Windows 98, Windows 95

File Name

cardbus.ZIP (247.5 KB)

Find Related Drivers

Uploader Notes

A3400 Cardbus

21-Aug-2001

Uploaded By

John (DG Staff Member) on 11-Aug-2004

Driver Contents File List

The following files are found inside the driver download file.

Name Size Date
WIN98SE/O2MCBSE.INF 6.4 KB 23 Dec 1999
WIN98SE/CB423706.W98 26.0 KB 6 Jul 1999
WIN98SE/O2MW98SE.INF 6.2 KB 23 Dec 1999
WIN98SE/CBSSO2.VXD 26.0 KB 6 Jul 1999
UTIL/O2INIT.SYS 15.5 KB 10 Nov 1999
UTIL/OZ6833C.DAT 1.5 KB 2 Dec 1999
UTIL/OZ6912A.DAT 1.8 KB 2 Dec 1999
UTIL/OZ6812D.DAT 1.6 KB 2 Dec 1999
UTIL/OZ6860C.DAT 1.9 KB 2 Dec 1999
UTIL/OZ6833D.DAT 1.4 KB 2 Dec 1999
UTIL/PREG.EXE 4.8 KB 8 Oct 1998
UTIL/O2INIT.COM 17.3 KB 10 Nov 1999
UTIL/OZ711E1A.DAT 1.7 KB 9 May 2000
UTIL/OZ6812B.DAT 1.6 KB 2 Dec 1999
UTIL/OZ6933B.DAT 2.1 KB 2 Dec 1999
UTIL/OZ6812A.DAT 1.5 KB 2 Dec 1999
UTIL/OZ6832C.DAT 1.5 KB 2 Dec 1999
UTIL/OZ6812D1.DAT 1.6 KB 2 Dec 1999
UTIL/O2INIT.DOC 6.8 KB 14 Jul 1999
UTIL/O2.EXE 70.4 KB 10 Nov 1999
UTIL/RESTART.COM 67 bytes 30 Nov 1999
UTIL/OZ6812C.DAT 1.5 KB 2 Dec 1999
UTIL/OZ6832C2.DAT 1.5 KB 2 Dec 1999
UTIL/OZ6833A.DAT 1.5 KB 2 Dec 1999
UTIL/OZ6833D1.DAT 1.4 KB 2 Dec 1999
UTIL/OZ6922A.DAT 1.6 KB 2 Dec 1999
UTIL/O2SW.EXE 12.3 KB 14 Nov 1997
UTIL/OZ6833B.DAT 1.6 KB 2 Dec 1999
UTIL/OZ6860A.DAT 1.5 KB 2 Dec 1999
UTIL/O2ACPI.EXE 13.8 KB 3 Oct 1997
UTIL/OZ6933A.DAT 1.8 KB 2 Dec 1999
WIN95/PCI.VXD 44.4 KB 25 Jul 1997
WIN95/PCCARD.VXD 79.6 KB 7 May 1997
WIN95/CB725A01.W95 16.3 KB 1 Oct 1998
WIN95/CBSS.VXD 16.2 KB 25 Jul 1997
WIN95/O2MCB.INF 4.3 KB 23 Dec 1999
WIN95/O2MW95.INF 4.3 KB 23 Dec 1999
WIN95/CBSSO2.VXD 16.3 KB 1 Oct 1998
WIN2000/O2MW2K.INF 3.7 KB 23 Dec 1999
O2MEMCHK.EXE 24.6 KB 2 Jul 1999
WIN98/CB511B22.W98 22.4 KB 22 Nov 1999
WIN98/O2MCB.INF 5.8 KB 23 Dec 1999
WIN98/O2MW98.INF 5.6 KB 23 Dec 1999
WIN98/CBSSO2.VXD 22.4 KB 22 Nov 1999
README.DOC 24.6 KB 10 Jan 2000
O2SETUP.INI 6.0 KB 21 Dec 1999
O2SETUP.EXE 44.0 KB 21 Dec 1999

How to Update A3400 Device Drivers Quickly & Easily

Step 1 - Download Your Driver

To get the A3400 driver, click the green download button above. After you complete your download, move on to Step 2.

If the driver listed is not the right version or operating system, search our driver archive for the correct version. Enter A3400 into the search box above and then submit. In the results, choose the best match for your PC and operating system.

Tech Tip: If you are having trouble deciding which is the right driver, try the Driver Update Utility for A3400. It is a software utility which automatically finds and downloads the right driver.

Step 2 - Install Your Driver

Once you have downloaded your new driver, you'll need to install it. In Windows, use a built-in utility called Device Manager, which allows you to see all of the devices recognized by your system, and the drivers associated with them.

How to Open Device Manager

  • In Windows 10 & Windows 8.1, right-click the Start menu and select Device Manager

  • In Windows 8, swipe up from the bottom, or right-click anywhere on the desktop and choose "All Apps" -> swipe or scroll right and choose "Control Panel" (under Windows System section) -> Hardware and Sound -> Device Manager

  • In Windows 7, click Start -> Control Panel -> Hardware and Sound -> Device Manager

  • In Windows Vista, click Start -> Control Panel -> System and Maintenance -> Device Manager

  • In Windows XP, click Start -> Control Panel -> Performance and Maintenance -> System -> Hardware tab -> Device Manager button

How to Install a driver from Device Manager

  1. Locate the device and model that is having the issue and double-click on it to open the Properties dialog box.

  2. Select the Driver tab.

  3. Click the Update Driver button and follow the instructions.

In most cases, you will need to reboot your computer in order for the driver update to take effect.

Tech Tip: Driver downloads and updates come in a variety of file formats with different file extensions. For example, you may have downloaded an EXE, INF, ZIP, or SYS file. Each file type has a slighty different installation procedure to follow.

For more help, visit our Driver Support Page for step-by-step videos on how to install drivers for every file type.

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