Intel
Intel LYSB0099EU4BS-ELECTRNCS PRO/Wireless 3945ABG Mini PCIe Card
★★★★★
Enhance Your Laptop's Connectivity with Wireless Freedom The Intel PRO/Wireless 3945ABG Mini PCIe Wireless Card provides reliable wireless connectivity for your laptop. Supporting 802.11a/b/g standards, this card enables you to connect to wireless networks at speeds up to 54 Mbps. Ideal for upgra...
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.
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Overview
Enhance Your Laptop's Connectivity with Wireless Freedom
The Intel PRO/Wireless 3945ABG Mini PCIe Wireless Card provides reliable wireless connectivity for your laptop. Supporting 802.11a/b/g standards, this card enables you to connect to wireless networks at speeds up to 54 Mbps. Ideal for upgrading or replacing your laptop's wireless card, it offers seamless integration and dependable performance.
Specifications:
- Wireless Standards: 802.11a/b/g
- Frequency Band: 2.4 GHz
- Transmission Speed: Up to 54 Mbps
- Interface: Mini PCI Express
- Compatibility: Most laptops with a Mini PCI-E slot (excluding HP & IBM)
Key Features
Note: this wireless card could not work on IBM/Lenovo/Thinkpad and HP version laptop
Frequency Band/Bandwidth 2.4 GHz IEEE 802.11b/g ISM Band
Transmission Speed Details 54 Mbps Maximum IEEE 802.11g
Transmission Speed Details 11 Mbps Maximum IEEE 802.11b
Operating Systems: Microsoft Windows 2000 Microsoft Windows XP Home Edition Microsoft Windows XP Professional Microsoft Windows XP Tablet PC Edition
Specifications
Product Type
Wireless Mini PCIe Card
Frequency Band
2.4 GHz
Wireless Standards
IEEE 802.11b/g ISM Band
802.11g Transmission Speed
54 Mbps Maximum
802.11b Transmission Speed
11 Mbps Maximum
Operating System Compatibility
Microsoft Windows 2000, Microsoft Windows XP Home Edition, Microsoft Windows XP Professional, Microsoft Windows XP Tablet PC Edition
Incompatibility
IBM/Lenovo/Thinkpad and HP version laptops
Pros & Cons
👍 Pros
- Operates across the 2.4 GHz IEEE 802.11b/g ISM Band, offering common wireless connectivity.
- Achieves a maximum transmission speed of 54 Mbps when utilizing IEEE 802.11g for faster data rates.
- Supports a transmission speed of 11 Mbps maximum with IEEE 802.11b, providing compatibility with older networks.
- Compatible with several Microsoft Windows operating systems including Windows 2000, XP Home, XP Professional, and XP Tablet PC Edition.
- The Mini PCIe Card form factor allows for integration into compatible laptop systems.
- Provides a wireless solution for laptops that may lack built-in Wi-Fi or require an upgrade to these specific standards.
👎 Cons
- This wireless card is explicitly stated as incompatible with IBM/Lenovo/Thinkpad and HP version laptops, significantly limiting its application.
- The maximum transmission speeds of 54 Mbps (802.11g) and 11 Mbps (802.11b) are considerably slower than modern Wi-Fi standards like Wi-Fi 4 (802.11n) or Wi-Fi 5 (802.11ac).
- Compatibility is limited to older Microsoft Windows operating systems, specifically Windows 2000 and various Windows XP editions, making it unsuitable for newer OS versions.
- It only supports the 2.4 GHz frequency band, meaning it cannot utilize the less congested and faster 5 GHz band.
- The lack of 802.11n or newer Wi-Fi standards means it cannot take advantage of improvements like MIMO or wider channels for better range and speed.
Frequently Asked Questions
Which laptop brands are incompatible with the Intel PRO/Wireless 3945ABG Mini PCIe Card?
This wireless card is explicitly stated as not working on IBM/Lenovo/Thinkpad and HP version laptops.
What frequency band does this wireless card operate on?
It operates on the 2.4 GHz IEEE 802.11b/g ISM Band.
What are the maximum transmission speeds for this card under different Wi-Fi standards?
It supports a maximum transmission speed of 54 Mbps for IEEE 802.11g and 11 Mbps for IEEE 802.11b.
What operating systems are supported by the Intel PRO/Wireless 3945ABG?
This card is compatible with Microsoft Windows 2000, Microsoft Windows XP Home Edition, Microsoft Windows XP Professional, and Microsoft Windows XP Tablet PC Edition.
Does this wireless card support the 5 GHz Wi-Fi band?
No, the specifications indicate it only operates on the 2.4 GHz IEEE 802.11b/g ISM Band.
Can this card be used in a modern laptop running Windows 10 or 11?
The listed operating system compatibility is limited to Microsoft Windows 2000 and various Windows XP editions, suggesting it is not designed for modern operating systems.
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