The HP 4G LTE-Advanced Pro Cat19 WWAN module (B8BD3AA) is an internal M.2 mobile broadband card for HP's higher-tier business notebooks. It gives a laptop its own 4G cellular connection, so staff can work from a site, a vehicle or a client office without depending on public Wi-Fi or tethering a phone. HP lists it for the EliteBook X G1i and X Flip G1i, the EliteBook 8 G1i and G1a (13, 14 and 16 inch, including Flip and Next Gen AI models), and the ZBook 8 G1i and G1a-series mobile workstations. Category 19 is the top LTE-Advanced Pro class and is designed for downloads beyond Cat16 where the operator's network supports it. The card measures 52 x 30 x 2.3 mm, weighs about 7 g and supports Windows 10 and 11. It is fitted internally in a notebook that already has WWAN antennas.