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IBM 31P9109 IEEE 802.11a/b/g Wireless Network CardBus Adapter for ThinkPad
- Wireless Standard: IEEE 802.11a/b/g
- Interface: CardBus (Type II)
- Designed for IBM ThinkPad laptops
- Supports both 2.4 GHz (b/g) and 5 GHz (a) bands
- Data transfer rates up to 54 Mbps (802.11g)
- Backward compatible with 802.11b
- Provides wireless network access for compatible ThinkPads
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Product Overview
The IBM 31P9109 is a Wireless Network CardBus adapter specifically designed for ThinkPad laptops. It enables wireless connectivity using the IEEE 802.11a/b/g standards, providing a versatile solution for accessing networks. This adapter utilizes the CardBus interface, which was common in older generations of laptops for expansion.
Technical Information
| Wireless Standard | 802.11a/b/g |
| Interface | CardBus |
| Compatibility | IBM ThinkPad |
Additional Specifications
| Frequency Bands | 2.4 GHz, 5 GHz |
| Max Data Rate | 54 Mbps |
Product Description
The IBM 31P9109 Wireless Network CardBus Adapter is a legacy networking component tailored for IBM ThinkPad notebooks that feature a CardBus slot. This adapter facilitates wireless network connectivity, allowing users to connect to Wi-Fi networks without the need for physical Ethernet cables. It supports the widely adopted IEEE 802.11a, 802.11b, and 802.11g standards, offering a flexible solution for accessing both older and newer wireless infrastructures. The adapter's support for multiple standards means it can operate on the 2.4 GHz frequency band (for 802.11b/g) and the 5 GHz frequency band (for 802.11a). The 802.11g standard provides data transfer rates of up to 54 Mbps, which was considered fast for its time and sufficient for general internet usage, email, and basic file sharing. Backward compatibility with 802.11b ensures it can connect to older wireless networks operating at 11 Mbps. As a CardBus adapter, it utilizes the 32-bit PC Card standard, offering higher bandwidth than the older 16-bit PCMCIA cards. This specific model is identified as being designed for IBM ThinkPads, suggesting potential driver optimizations or specific form factor considerations for those systems. It represents a crucial upgrade for ThinkPad users seeking to add or enhance wireless capabilities on models equipped with a CardBus slot.
