ASUS ZenBook UX391FA
Laptop, from 2019 11 hardware reports
Memory
Soldered
No slot to add more
SSD and charger
Coming next
Checked from separate sources
Not upgradable
No. The memory is soldered to the board.
8 or 16 GB is built in and there is no slot to add more.
- Free slots
- None
- Type
- LPDDR3-2133
- Soldered
- 8 GB or 16 GB, depending on the configuration
- Firmware says
- 16 GB maximum
- How sure
- 11 of 11 reports show this layout
Worked out from 11 hardware reports of this laptop. Sources and method. Updated 9 Nov 2026.
All soldered
Illustration Questions
Can I upgrade the RAM in the ASUS ZenBook UX391FA?
No. The memory is soldered to the board. 8 or 16 GB is built in and there is no slot to add more.
What type of RAM does the ASUS ZenBook UX391FA use?
LPDDR3-2133 memory soldered to the board.
How much RAM can the ASUS ZenBook UX391FA take?
Machines in the reports run up to 16 GB. That matches the 16 GB maximum the firmware reports.
Is this my laptop?
Check the model name on the label underneath. It should read ZenBook UX391FA.