A:AnswerIt can be upgraded to 16 gigabytes. Adding a backlit keyboard might be a problem. Yo'd need to contact a qualified repair location to determine if there's even a compatible backlit keyboard.
A:AnswerThe laptop has the following ports:
Headphone Jack - Yes
Number of USB Ports (Total) 3
Number of USB 3.0 Type A Ports 2
Number of USB 3.1 Type C Ports 1
Number of VGA PortsInfo 1
Number of DisplayPort Outputs (Total) 1
Number of DisplayPort Ver. 1.2 Outputs 1