Lenovo IdeaPad S540-15IML - RAM Upgrade Guide
The Lenovo S540-15IML laptop has two memory slots for RAM, but only one of these slots can be upgraded by the user. The maximum amount of memory the laptop can support is 20GB, with up to 16GB possible in the slot that can be accessed for upgrades. The type of memory used is DDR4 SDRAM, and it comes in a small outline dual inline memory module (SODIMM) format. For optimal performance, the recommended clock speed for the RAM is 2666MHz, which corresponds to the PC4-21300 standard.
Lenovo IdeaPad S540-15IML Memory Specifications & Maximum RAM Capacity
| Specification | Value |
|---|---|
| Laptop Model | Lenovo IdeaPad S540-15IML |
| 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 Lenovo IdeaPad S540-15IML RAM
How many RAM slots does the Lenovo S540-15IML have?
It has 2 slots total, but only 1 is accessible for upgrades. The other slot has soldered memory that can't be removed.
What's the maximum RAM I can install in this laptop?
The maximum total is 20GB. Since one slot has fixed memory (usually 4GB), you can add up to 16GB in the accessible slot to reach that 20GB total.
What type of RAM do I need for the S540-15IML?
You need DDR4 SODIMM modules - the smaller laptop-sized RAM sticks. Make sure it's DDR4, not DDR3 or DDR5.
What speed RAM should I get?
2666MHz (also labeled as PC4-21300) is the recommended speed. The system might accept faster RAM but it'll run at 2666MHz anyway.
Can I upgrade both RAM slots?
No, only one slot is upgradeable. The other has memory soldered directly to the motherboard, so you're stuck with whatever came installed there.
Will any DDR4 laptop RAM work?
As long as it's DDR4 SODIMM at 2666MHz or higher, it should work fine. Just remember the 16GB limit for the upgradeable slot.