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Old 04-13-2011
Z.K. Z.K. is offline
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Question Sierra Broadband MC5727 and Windows 7 driver

I have a Sierra Broadband MC5727 mini PCI-E card and though Windows 7 knows what it is, it does not install a driver. After searching the Internet it looks like Windows 7 is supposed to come with the driver, but if that is so, it does not work. Anyone know how to get this installed properly?

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Old 04-13-2011
Jerry K's Avatar
Jerry K Jerry K is offline
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idea Re: Sierra Broadband MC5727 and Windows 7 driver

Thread moved from the Windows 7 forum.

Driver we have posted on but Windows 7 is not listed as supported: (have you tested it?)


Microsoft says it will install without drivers:

[url] C5727%20PCI%20Express%20Mini%20Card&v=Sierra%20Wir eless&uid=5727D%20&pf=1&pi=9&c=Networking&sc=Mobil e%20Broadband&os=32-bit[/url]

Perhaps the device is bad (ie: not working). Has it ever worked?

There is a file posted here for downloading but not sure if it's a driver or an update:


As a last resort, open Device Manager, double-click the device, click the Details tab and tell me what the 1st line of text is, ie: the hardware id string.

Also, if this device came pre-installed in your laptop, provide the laptop brand and model.
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