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If you’re looking to upgrade or replace the Wi-Fi card in your HP ProBook 455 G3, the first step is to identify the exact model of the Wi-Fi adapter your laptop currently has. According to the service manual, there are four different Wi-Fi card options used in this series. You can check the manual on page 20 for detailed information.
Once you know which model you have, the next step is to find a replacement or upgrade. Since these cards are no longer produced, your best bet is to search on eBay or other secondhand marketplaces. To make sure you find the right card, search by the specific HP part number listed in the manual.
For most users with the first three Realtek cards, you can upgrade to the Realtek RTL8821CE Wi-Fi + Bluetooth 4.2 combo adapter. This model supports 802.11 ac Wi-Fi and MU-MIMO technology, making it a solid upgrade over older cards.
Before you purchase, double-check that the part number matches your current card. Installing this upgrade is straightforward, and it can significantly improve your wireless speed and connection stability. Just turn off your laptop, open the back panel, carefully remove the existing Wi-Fi card, and replace it with the new one. Make sure to secure it properly and reassemble your laptop before turning it back on.
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