This message was posted on behalf of Intel Corporation
Please keep in mind that this forum is supported in English, so we are posting our response using this language; feel free to reply in your native language as we can use the "Translate" feature of the Communities, or other online translators. If you require support in German, please Contact Intel Support to engage your nearest support center.
Using our online translator, we understand you have a PC's with the Intel® PRO/Wireless 3945ABG and another with the Intel® Centrino® Wireless-N 2200, and you have different questions about them. Here is some information about these topics:
1. Both of these adapters reached End of Interactive Support. It is important to mention that Windows* XP has been discontinued by Microsoft* as well. The support options for this configuration are limited. The last driver that was available for Windows* XP supported both of these adapters (3945 and 2200) and is available from our Download Center: Intel® PROSet/Wireless Software and Drivers for Windows XP* [15.8.0]
2. The channels that can be used by the Intel® Wireless Adapters are defined by international standards and country rules. As you know, Channels 12, 13 and 14 of the 2.4 GHz band are not allowed in most countries around the world. For this reason, the available channels in your PC depend on the regulations of the country it was meant to be used and the configuration from the Computer Manufacturer. Intel does not have a way to override the OEM configuration.
We advise you to check with the Computer Manufacturer Support, they will let you know which channels can be used by your PC, and if they have a way to change this.
3. If you are planning to upgrade your wireless adapter, we advise you to check with the Computer Manufacturer Support about this. Intel does not support, nor recommends custom integration of wireless adapters since this may lead to installation errors, connection issues, software error messages, and in some cases it may even be illegal.
Intel does not recommend end users install or upgrade the various Intel® Wireless Adapter. For more information, please check the following advisories:
Why Doesn't My Laptop Recognize My New Intel® Wireless Adapter?
Regulatory Information Regarding Hardware Installation or Upgrade
4. Both of these adapters are discontinued, Intel is no longer manufacturing adapters that use the same form factors. In our best effort, we advise you to check with the Computer Manufacturers, so they can let you know the best Wireless adapter upgrade possible for your PC's. Here are a few models you can ask them about:
- The 3945 used PCIe Mini Card Form Factor and the last adapters from Intel with this form factor were the Intel® Ultimate N WiFi Link 5300 and Intel® WiFi Link 5100.
- The 2200 used PCIe Half Mini Card Form Factor, the last series of Adapters from Intel available in this form factor were the Intel® Wireless 7260 series.