Asus Vivobook X409UJ - RAM Upgrade Guide
The Asus Vivobook X409UJ laptop has two memory slots for RAM, but only one of these slots can be upgraded by the user. The total memory capacity of the laptop can reach up to 20GB, with the user-accessible slot supporting a maximum of 16GB. The type of memory used is DDR4 SDRAM, and it comes in the SODIMM format, which is a compact design suitable for laptops. For optimal performance, it is suggested to use RAM with a clock speed of 2666MHz, also referred to as PC4-21300.
Asus Vivobook X409UJ Memory Specifications & Maximum RAM Capacity
| Specification | Value |
|---|---|
| Laptop Model | Asus Vivobook X409UJ |
| Total memory slots | 2 (1 not upgradeable) |
| Maximum RAM | 20GB (up to 16GB in user accessible slot) |
| Memory type | DDR4 SDRAM |
| Form factor | SODIMM (Small Outline Dual Inline Memory Module) |
| Recommended RAM clock speed | 2666MHz (PC4-21300) |
| Voltage | Low - 1.2V |
| Number of pins | 260-pin |
FAQ about Asus Vivobook X409UJ RAM
How many RAM slots does the Asus Vivobook X409UJ have?
It has 2 total memory slots, but only 1 is accessible for upgrades. The other slot has soldered memory that can't be changed.
What's the maximum RAM I can have in this laptop?
You can have up to 20GB total - that's 4GB soldered on the motherboard plus up to 16GB in the upgradeable slot.
What type of RAM do I need for this laptop?
You need DDR4 SODIMM memory modules. Make sure it's SODIMM (the smaller laptop memory) not regular desktop RAM.
What speed RAM should I get?
Get 2666MHz DDR4 memory (also labeled as PC4-21300). The laptop might work with faster RAM but it'll just run at 2666MHz anyway.
Can I upgrade both RAM slots?
No, only one slot can be upgraded. The other has memory permanently attached to the motherboard, so you're stuck with whatever came from the factory in that slot.
If my laptop came with 8GB, how is it configured?
Most likely it's 4GB soldered + 4GB in the upgradeable slot. You can replace that 4GB stick with up to 16GB for a total of 20GB.