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Introduction

Use this guide to replace the RAM.

The processor in the DS412+ supports DDR3 800/1066MHz RAM modules

  1. DS412+ Remove the front panel
    • DS412+

    • Remove the front panel

  2. Remove the hard disks
    • Remove the hard disks

  3. Remove the two screws in the back of the NAS, on the top and bottom. Remove the two screws in the back of the NAS, on the top and bottom.
    • Remove the two screws in the back of the NAS, on the top and bottom.

  4. Locate those 2 tabs on the left side inside the device. Lift them up off the metal brace
    • Locate those 2 tabs on the left side inside the device.

    • Lift them up off the metal brace

    • You may have to bend the metal support bar to remove the case. Bend it back if you do.

    This step could really use a better illustration of the removal technique. The plastic here is extremely stiff and it can be hard to bend it enough to move the tabs.

    This is the best technique I found, that will avoid damaging the plastic facing of the case. I am using the iFixit photo as a guide. Take a flathead screwdriver and place it down within the DS412, head facing up. Stick the head in between the metal bar and the plastic casing, and at the midpoint between the two tabs. Apply gentle pressure.

    Chris - Réponse

    I played around with a flathead screwdriver at first but it scratched the metal and I was worried it might damage the plastic casing.

    So I found the least destructive way to remove the plastic casing from the metal cage is, by pushing with all four fingers up against the black plastic inside the housing (so behind the metal bar) while your thumb holds on against the outside of the housing and simultaneously pushes the whole housing to shove the two black plastic tabs over the metal bar.

    FS-dollop - Réponse

    Please note, the tabs are just to block the outer case from sliding back in the next step — there’s no big trick or force required here, just flex the side of the case enough to get the tabs to slide past the metal bar.

    Rob Miller - Réponse

    You probably won’t like my solution to this nerve-wracking stage, but simply use a Stanley knife to slice the top of the tabs at an angle and the case can then be slid back relatively easily over the metal bar. It’s my NAS and the screws on the back will hold the case close perfectly well without needing those tabs locking as rigidly as they did before I attacked them. :-)

    It’s a daft easy-assembly, difficult-disassembly case.

    Richard Lewis - Réponse

    Coming back to this comment on reassembly: Actually the tabs click back into place very nicely and hold the case in place, just not quite as firmly as before. But still will require a bit of force to remove the cover again. So perfect!

    Richard Lewis - Réponse

    I used 2 plastic (!) tire lifters from the bicycle tool box. They fit under the hooks perfectly and I could easily move back the housing and made no damage whatsoever.

    Chrisitan Kolb - Réponse

  5. Push the case away towards the back about 1 cm Push the case away towards the back about 1 cm
    • Push the case away towards the back about 1 cm

  6. With the NAS on its right side, lift up the enclosure, mind the tabs on the top of the case. With the NAS on its right side, lift up the enclosure, mind the tabs on the top of the case.
    • With the NAS on its right side, lift up the enclosure, mind the tabs on the top of the case.

  7. Remove the screw securing the HDD bays enclosure. Remove the screw securing the HDD bays enclosure.
    • Remove the screw securing the HDD bays enclosure.

  8. Remove the screw securing the I/O board.
    • Remove the screw securing the I/O board.

  9. Remove the four screws securing the HDD bays Remove the four screws securing the HDD bays
    • Remove the four screws securing the HDD bays

  10. Pull the fan a little bit away Pull the fan a little bit away
    • Pull the fan a little bit away

  11. Watch out for this plug Lift the metal bracket out
    • Watch out for this plug

    • Lift the metal bracket out

  12. Remove the fan power headers Remove the fan power headers
    • Remove the fan power headers

  13. Remove the I/O board by lifting it up
    • Remove the I/O board by lifting it up

  14. Remove those 4 screws Remove those 4 screws
    • Remove those 4 screws

  15. Starting from the front of the unit, remove the motherboard from the unit.
    • Starting from the front of the unit, remove the motherboard from the unit.

  16. Pull these tabs and remove the ram Old and new Ram The old RAM's part number is: M3SN-1GSFCCM7-GA14
    • Pull these tabs and remove the ram

    • Old and new Ram

    • The old RAM's part number is: M3SN-1GSFCCM7-GA14

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

Conclusion

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

33 autres ont terminé cette réparation.

gieljnssns

Membre depuis le 26/06/2011

925 Réputation

1 tutoriel rédigé

13 commentaires

Hi is it also possible with a Synology ds216play? Or is the RAM not modular in this Drives?

markusguenther30684 - Réponse

Very nice guide. Thank you!

mbs - Réponse

Thank you for the guide, just to ease it up a bit for everybody following, the best way to pull the two tabs from step 4 was to use small spoon (or anything metal) and use it as a crowbar from the inside (do not try to put force from the outer rim, but really from inside of the Synology itself (against the metal beam the tabs are holding to).

Ondrej Palat - Réponse

Thank you very much.

Olivier Claude - Réponse

did these steps and now my DS412+ won't boot anymore. just the blue power light for a few seconds, no hard drive or fan will turn on.

after putting the old RAM in the slot nothing changed. cannot find any error, how do I find out what's wrong here???

Andreas Hanny - Réponse

Super facile, en 10 minutes même pas c'est fait !!

user0 - Réponse

This guide was great. Thanks for posting it!

I upgrade to 2gb RAM last night with no problems. I used "Kingston Technology ValueRAM 2GB 1333MHz DDR3 Non-ECC CL9 SODIMM SR X16 Notebook and Portable Memory KVR13S9S6/2" from Amazon.

System is humming along nicely now.

Jeff Smith - Réponse

Thank you for this guide.

I upgrade my RAM without any trouble.

The use of two tea spoon to lift the tab in step 4 is very useful.

Marc Jean - Réponse

May God bless you for this amazingly clear and detailed tutorial! I was able to install a 4GB module sooooo easily and now my 412+ after more than 5 years of activity is reborn into a new life!!! Thank you so much!

casagni - Réponse

Thank you very much for that excellent description.

With it I was able to fix my dead DS412+ with changing the onboard battery ;-)

Oliver

Oliver Geissler - Réponse

Worked like a charm! Thank you very much.

nerfologist - Réponse

remember to buy low voltage RAM. this is a must

Cyrus Leung - Réponse

What do you mean with low voltage RAM Cyrus: 1,35V and not 1,5V?

Can I Use DDR4 or DDR3L So-Dimms or is a pure DDR3-module absolute necessary?

I prefer Kingston or Corsair and 8GB or maybe 4GB and ECC instead of non-ECC.

Here’s a Corsair module that caught my attention: CMSO8GX3M1C1600C11 from Amazon.

Is this a good choice?

Thank you!

Mark -

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