Siemens SpeedStream 5260 Driver Download

Siemens Drivers

The SpeedStream 5260 is a modem manufactured by Siemens. If you cannot connect to the network, or have slow transfer speeds or intermittent disconnection problems, you may need to update your modem driver or firmware. This driver - "" - has been downloaded 279 times and is rated 3 out of 5 stars based on 11 reviews. The uploader reports that this update will work successfully on PCs running Windows XP. The total disk space used for this update is 5.3 MB.

11 Ratings

Supported Models

SpeedStream 5260



Supported Operating Systems

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

File Name


Version 1.5b (15-Nov-2001)

Additional Notes

To unzip file use the password of "password". Good Luck!

Uploaded By

Jim (DG Member) on 10-Oct-2007

Driver Contents File List

The following files are found inside the driver download file.

Name Size Date
Setup/EFFICIENT/usersguide.pdf 636.7 KB 22 Feb 2001
Setup/EFFICIENT/_INST32I.EX_ 296.7 KB 23 Feb 1999
Setup/EFFICIENT/_ISDel.exe 27.6 KB 27 Oct 1998
Setup/EFFICIENT/_Setup.dll 34.8 KB 29 Sep 1998
Setup/EFFICIENT/ 205.6 KB 15 Aug 2001
Setup/EFFICIENT/ 203.4 KB 15 Aug 2001
Setup/EFFICIENT/autorun.inf 29 bytes 14 Jul 2000
Setup/EFFICIENT/Binding.inf 156 bytes 26 Apr 2000
Setup/EFFICIENT/ 3.1 MB 15 Aug 2001
Setup/EFFICIENT/DATA.TAG 115 bytes 15 Aug 2001
Setup/EFFICIENT/EnterNet.ini 406 bytes 15 Aug 2001
Setup/EFFICIENT/EnterNet.cnt 2.4 KB 25 Apr 2001
Setup/EFFICIENT/lang.dat 23.5 KB 12 Jan 1999
Setup/EFFICIENT/layout.bin 953 bytes 15 Aug 2001
Setup/EFFICIENT/License.txt 12.3 KB 20 Aug 2001
Setup/EFFICIENT/ntsp3oe2.inf 3.8 KB 19 Oct 2000
Setup/EFFICIENT/ntspppoe.inf 9.2 KB 19 Oct 2000
Setup/EFFICIENT/oemnadntspppoe.inf 36.8 KB 28 Nov 2000
Setup/EFFICIENT/os.dat 450 bytes 27 Jul 1998
Setup/EFFICIENT/ReadMe.txt 5.8 KB 8 Aug 2001
Setup/EFFICIENT/ReleaseNotes.pdf 38.3 KB 7 Aug 2001
Setup/EFFICIENT/RemoveEnterNet.bat 17 bytes 14 Jul 2000
Setup/EFFICIENT/ROBOEX32.DLL 1.1 MB 3 Aug 2000
Setup/EFFICIENT/setup.exe 73.7 KB 12 Jan 1999
Setup/EFFICIENT/setup.ins 99.9 KB 3 Aug 2001
Setup/EFFICIENT/SETUP.ini 3.0 KB 8 Nov 2001
Setup/EFFICIENT/SETUP.ini.orig.txt 3.0 KB 8 Nov 2001
Setup/EFFICIENT/setup.lid 49 bytes 15 Aug 2001

How to Update SpeedStream 5260 Device Drivers Quickly & Easily

Step 1 - Download Your Driver

To get the SpeedStream 5260 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 Siemens SpeedStream 5260 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 Siemens Driver Update Utility. It is a software utility which automatically finds and downloads the right driver.

To find the newest driver, you may need to visit the Siemens website. Most major device manufacturers update their drivers regularly.

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 11, 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.

This website is not affiliated with Siemens. All company names/logos are properties of their owners.
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