The ProBook 450 G1 has a better Wi-Fi standard than most notebook PCs that have been on the market for more than two years. This laptop has an 802.11n WiFi standard, whereas most portable PCs that have been on the market for around the same time as it have an 802.11b WiFi standard. This HP laptop also has an 802.11g WiFi standard.
This notebook PC's Wi-Fi standard (802.11n) is actually the best Wi-Fi standard across all comparable spec laptops that have been around for around the same time as the ProBook 450 G1.
An 802.11a WiFi standard is the worst Wi-Fi standard across comparable types of notebook PC.