Add 2nd HDD to HP dual-drive laptop

How to add a 2nd Hard Drive or SSD to an HP Laptop equipped with two internal HDD bays such as the HP dv7, dv7t (including the dv7-4000 and dv7-5000, dv7tqe, dv7-6000) series, dv8, HDX-18, Envy 17. These laptops oftentimes come from the factory with only one drive installed and one internal bay that’s empty. To install a 2nd HDD or SSD, you would need a HDD caddy and cable connector kit as shown in the video. The laptop used in the demo is a HP Envy 17. The other HP laptop models above mentioned will vary in installation process, but is similar. newmodeus.com

so yes I had decided recently to obtain my own Internet connector device, while there is already a modem. However I’ve been desperately trying to get two laptops of mine to connect to the internet while I’m using the internet connector device in one of them, I’ve reeked almost every where but no progress
thanks for reading.