If you plug the card into a Windows PC, it might show up in Device Manager as an "Unknown Device," or it might be detected but fail to start.

Also linked to this certification in various desktop and laptop configurations from Lenovo Support .

: Visit the Dell Support page and search by your Service Tag.

| Field | Information | |-------|-------------| | | ANATEL (Brazil) | | Homologation/Approval No. | 2504 09 3987 | | Driver Type | Wireless network adapter driver | | Typical Use | Wi-Fi, Bluetooth, or proprietary RF module | | Compatibility | Check device label – must match approval number |

Because this number refers to a certification rather than a hardware model, finding the correct driver requires identifying the actual manufacturer of the internal chip (e.g., Atheros AR5B95 or Intel PROSet/Wireless). Identifying the Hardware Behind the Anatel Code