ASUS K43SJ
Laptop, from 2011 12 hardware reports
Memory

Up to 16 GB
2+ laptop-size slots
SSD and charger
Coming next
Checked from separate sources
Upgradable
Yes. At least 2 slots, up to 16 GB seen working.
It takes DDR3-1333 laptop-size sticks (SO-DIMM).
- Slots
- At least 2 SO-DIMM slots
- Firmware lists
- 4 sockets, but no machine in the reports had more than 2 filled. Many laptops list sockets that aren't there, and some workstations hide two slots under the keyboard.
- Type
- DDR3-1333 204-pin SO-DIMM
- Most seen working
- 16 GB in two or more machines
- Firmware says
- 16 GB maximum
- How sure
- 12 of 12 reports show this layout
See 8 GB DDR3-1333 SO-DIMM on AmazonOpens an Amazon search for this exact spec.
Worked out from 12 hardware reports of this laptop. Sources and method. Updated 9 Nov 2026.

2+ laptop-size slots
Illustration Questions
Can I upgrade the RAM in the ASUS K43SJ?
Yes. At least 2 slots, up to 16 GB seen working. It takes DDR3-1333 laptop-size sticks (SO-DIMM).
What type of RAM does the ASUS K43SJ use?
DDR3-1333 laptop-size sticks (SO-DIMM, 204-pin).
How much RAM can the ASUS K43SJ take?
Machines in the reports run up to 16 GB. That matches the 16 GB maximum the firmware reports.