How to open ASUS Vivobook S 14 OLED M5406 – disassembly and upgrade options
Opening the ASUS Vivobook S 14 OLED
Hint: Ensure the laptop is powered off and unplugged before starting.
- Undo the 11 Torx-head screws securing the bottom panel. Note that the screw in the middle is hidden beneath a small cap, which must be carefully unglued using a flathead drill bit or similar tool.
- Pop the areas behind the hinges using a lever tool. Press the hinges with your finger to stabilize them before lifting the panel.
- Fully pry the rear and then proceed around the sides to release the bottom cover.
More info: The inside of the bottom plate houses three dust filters in front of the ventilation grill and a dedicated cooling pad for the SSD.
Battery Removal
Caution: Wear gloves to prevent short circuits when handling the battery.
- Slide upwards the small metal shroud on top of the battery connector to release it.
- Carefully lift the connector by its sides using a plastic tool to disconnect it from the motherboard.
- Undo the two Phillips-head screws securing the 75Wh battery to the chassis.
- Gently lift and remove the battery from the laptop.
More info: The 75Wh battery provides up to 15 hours of video playback, making it suitable for extended use.
You can find compatible batteries here: Buy from Amazon.com (#CommissionsEarned)
Memory Upgrade
Note: The memory is soldered and cannot be upgraded.
More info: The configuration varies by CPU type: – Zen 3+ CPUs support up to 16GB of LPDDR5x-6400MHz RAM. – Zen 4 and Zen 5 CPUs can be configured with up to 32GB of LPDDR5x-7500MHz memory.
Ensure you choose the desired memory configuration when purchasing.
Storage Upgrade
Hint: Handle SSD components carefully to avoid damage or data loss.
- Locate the single M.2 slot, which is compatible with 2280 Gen 4 SSDs.
- The preinstalled NVMe drive is covered with a heat shield. Remove the shield carefully to access the SSD slot.
- Insert the new SSD at a slight angle, ensuring it is fully seated, and replace the heat shield to maintain thermal performance.
More info: The SSD is supported by a dedicated cooling pad and shield for improved heat management.
You can find compatible SSDs here: Buy from Amazon.com (#CommissionsEarned)
Wi-Fi Card
More Info: The Wi-Fi 6E card is soldered and it’s placed between the battery connector and the single M.2 slot for 2280 Gen 4 SSDs.
Cooling System Overview
- Two decently sized fans provide airflow to the key components.
- A pair of heat pipes transfer heat away from the CPU and other critical areas.
- Two heat sinks and a central heat spreader further enhance the thermal efficiency.
Tip: Regularly clean the fans and heat pipes to maintain optimal cooling performance.
ASUS Vivobook S 14 OLED (M5406) in-depth review
If the Vivobook S 14 OLED M5406 looks familiar to you that's because it's the smaller version of the M5606 model. Aside from the different sizes, almost everything else is the same. It's still a modern well-built machine that is offered with Zen 3+ Refresh, Zen 4, and Zen 5 CPU options. You have to be very careful when picking a configuration because the performance leap between the least powerful processors and the Ryzen AI 9 HX 370 is huge. Not to mention that the latter is a much better choice for users who care about AI productivity thanks to the 50 TOPS NPU.Once again, we have bought [...]

Pros
- Great OLED display with 100% sRGB and DCI-P3 coverage (SDC41A0)
- Infinite contrast ratio (SDC41A0)
- Great color accuracy (SDC41A0)
- 642 cd/m² of max brightness in HDR mode (SDC41A0)
- Good audio quality
- Comfortable keyboard
- 1080p IR Web camera with a privacy shutter
- The overall performance is on par with the 16-inch version
- The fans are almost quiet in "Whisper" mode during full loads
- Up to 32GB of soldered LPDDR5x for the Zen 4 and Ryzen AI-based laptops
- Very long battery life (15 hours of videos)
- Adequate CPU clocks no matter the load
- Metal build
- Well-cooled SSD (SAMSUNG PM9C1)
- 180-degree hinge
Cons
- Just one M.2 slot + soldered RAM
- Slow 5 Gbps USB connectors (for the Zen 3+ machines)
- The Ryzen 5 7535HS-based notebooks come with just 8GB or 16GB of RAM