Lenovo IdeaPad S340-15IIL - RAM Upgrade Guide

The Lenovo S340-15IIL 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 available in the user-accessible slot. It uses DDR4 SDRAM as the memory type, and the physical format of the RAM is SODIMM, which stands for Small Outline Dual Inline Memory Module. For best performance, the recommended RAM speed is 2666MHz, also referred to as PC4-21300.
Lenovo IdeaPad S340-15IIL Memory Specifications & Maximum RAM Capacity
| Specification | Value |
|---|---|
| Laptop Model | Lenovo IdeaPad S340-15IIL |
| 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 S340-15IIL RAM
Can I upgrade the RAM in my Lenovo S340-15IIL laptop?
Yes, but only partially. The laptop has 2 memory slots total, but only 1 slot is accessible for upgrades. The other slot has soldered memory that can't be removed or replaced.
What's the maximum RAM I can have in this laptop?
The maximum total memory is 20GB. This typically means 4GB is soldered on the motherboard, and you can add up to 16GB in the upgradeable slot.
What type of RAM do I need for the S340-15IIL?
You need DDR4 SODIMM memory modules. Make sure to get laptop memory (SODIMM), not desktop memory (DIMM) - they're physically different sizes.
What speed RAM should I buy?
Get 2666MHz DDR4 memory (also labeled as PC4-21300). The laptop might work with faster RAM, but it'll just run at 2666MHz anyway, so there's no benefit to buying faster modules.
How much RAM comes with the laptop originally?
This varies by configuration, but commonly it's either 4GB soldered only, or 4GB soldered + 4GB in the upgradeable slot for 8GB total. Check your current setup in Windows Task Manager or system settings.