Those pictures are displaying two different HP models.
does this have a pcie for m.2 ssd addition?
I’m sorry but sometimes we are unable to publish the model number. This is to protect the brand’s presence in the marketplace for this price. Also, in many cases, these are Woot exclusive models.
I’ll ask about additional SSD space.
Does the laptop have a back-lit keyboard?
Per the Specs, it doesn’t appear that this laptop has a backlit keyboard, no.