Asus X540UB - RAM Upgrade Guide

The Asus X540UB laptop has two memory slots for RAM, but only one of them can be upgraded by the user. The total memory capacity of the laptop can reach up to 12GB, with a maximum of 8GB allowed in the user-accessible slot. It uses DDR4 SDRAM as its memory type, which comes in a small form factor known as SODIMM. For optimal performance, the recommended RAM speed is 2133MHz, also referred to as PC4-17000.
Asus X540UB Memory Specifications & Maximum RAM Capacity
| Specification | Value |
|---|---|
| Laptop Model | Asus X540UB |
| Total memory slots | 2 (1 not upgradeable) |
| Maximum RAM | 12GB (up to 8GB in user accessible slot) |
| Memory type | DDR4 SDRAM |
| Form factor | SODIMM (Small Outline Dual Inline Memory Module) |
| Recommended RAM clock speed | 2133MHz (PC4-17000) |
| Voltage | Low - 1.2V |
| Number of pins | 260-pin |
FAQ about Asus X540UB RAM
How many RAM slots does the Asus X540UB have?
It has 2 slots total, but only 1 is accessible for upgrades. The other slot has RAM soldered directly to the motherboard.
What's the maximum RAM I can install in this laptop?
You can add up to 8GB in the user-accessible slot. Combined with the built-in RAM, the maximum total is 12GB.
What type of RAM do I need for the X540UB?
You need DDR4 SODIMM modules - the smaller laptop-sized RAM sticks, not the full-size desktop ones.
What speed RAM should I buy?
Get 2133MHz DDR4 (also labeled as PC4-17000). The laptop won't benefit from faster speeds.
Can I upgrade both RAM slots?
No, only one slot is upgradeable. The other has permanent RAM that can't be removed or replaced.
Will any DDR4 laptop RAM work?
As long as it's DDR4 SODIMM at 2133MHz or higher, it should work. Just remember the 8GB limit for the upgradeable slot.