Either USB-C port can be used to power the notebook via the included charger. HP also added in a ... at $1,300 for the same Core i5-8550U, 8GB of RAM, and 256GB SSD, but we found battery life ...

I'd expect that any memory size that the CPU supports in intel's specs should work fine even if HP doesn't mention it. Offhand if it is a Broadwell i5 that should do 8GB per dimm. An SSD would be ...