Hi,
Welcome to HP Support Forum. On many sites, you can see http or https at the front you may also see www too but you won't see on many other sites and that is normal. The small lock indcates the site is more secure than other sites (without a small lock). Normally the site with a lock uses SSL (Secure Sockets Layer) , more info:
http://info.ssl.com/article.aspx?id=10241
For product name and number, Please use the following instructions to find out the model/product of your machine:
http://support.hp.com/us-en/document/c00033108
Regards.
BH***
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