Difficulty

Easy

Steps

5

Time Required

Suggest a time??

Sections

2

  • Battery Disconnect
  • 3 steps
  • RAM
  • 2 steps

Flags

1

Member-Contributed Guide

An awesome member of our community made this guide. It is not managed by iFixit staff.

  • BackASUS VivoBook S400C

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Introduction

The S400C comes with 4GB of RAM soldered on the motherboard and hence non-removable. The official Asus position is that the RAM expansion slot supports a maximum of 4 GB memory for a total of 8 GB. However, my own system is running a Samsung 8 GB M471B1G73EB0-YK0 module, for a total of 12 GB. Note that you must be running a 64-bit operating system to use more than 4 GB of memory.

The expansion slot takes DDR3L PC3L-12800 1600 MHz SODIMM memory.

Best practices state that you should wear an ESD (Electro Static Discharge) wrist strap when replacing computer memory.

What you need

Step 1

              Remove the Bottom Cover
  • Flip the device over and remove the ten 5.7 mm screws with a Phillips #0 screwdriver.

Flip the device over and remove the ten 5.7 mm screws with a Phillips #0 screwdriver.

1024

Step 2

  • Use a spudger or your fingers to go around and lift the edges and release the back panel.

Use a spudger or your fingers to go around and lift the edges and release the back panel.

Step 3

              Disconnect the Battery
  • Using a spudger, lift up the plug connecting the battery to the motherboard.

Using a spudger, lift up the plug connecting the battery to the motherboard.

Step 4

              RAM
  • Hook a thumbnail in each of the metal retainers on either side of the RAM module and spread them apart slightly.
  • The RAM module will pop up at an angle.

Hook a thumbnail in each of the metal retainers on either side of the RAM module and spread them apart slightly.

The RAM module will pop up at an angle.

Step 5

  • Slide the RAM out in a straight line to remove it.
  • When replacing the RAM, insert it at the same angle and be sure to slide it fully into the slot before snapping it down. The latches on the sides should fit exactly into the cutouts on the side of the memory module.

Slide the RAM out in a straight line to remove it.

When replacing the RAM, insert it at the same angle and be sure to slide it fully into the slot before snapping it down. The latches on the sides should fit exactly into the cutouts on the side of the memory module.

To reassemble your device, follow these instructions in reverse order.

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Author

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                    Jerry W

Member since: 03/21/2022

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Kenechi Palabrica - Dec 26, 2022

Reply

i bought an crucial 2gb 204-pin ddr3L dimm pc3-10 1600mhz 1.35v. and it won’t turn on with it installed, is there something wrong?

Jerry W - Dec 26, 2022

Hi Kenechi,

From what I can see, the RAM you bought sounds like it should be compatible with your VivoBook. One thing you might try is to update your BIOS; it is quite common for the BIOS to get updated to support newer RAM modules as they come out, so it’s possible you’re running an older version that doesn’t have the configuration for the RAM you bought.

I’d suggest doing a BIOS update then get back to us and let us know what you find, if it works after that or not.