I observed on my international version, EU plug hAP ac² that it reports more RAM than described in product specification, product brochure and block diagram. In all documentation 128 MB is mentioned, however "/system resource print" shows 256 MB: Are there multiple HW revisions on the market? Not that I would need more than 128 MB memory for my SOHO routing requirements, but I am still interested. Maybe it would worth to update documentation.

Thanks.

started to get interesting, just need to increase the flash too.

As I undestand it, sometimes you may get lucky and receive a little more than what's in specification. Not that double RAM helps much, even 128MB is probably more than what this device will ever need. I wouldn't dare to say the same about flash. But hey, it's free, no need to complain.

Just change specifications from "Size of RAM: 128 MB" to "Size of RAM: at least 128 MB".

Rather not. Everyone would start to ask what does it mean and what is the probability distribution of each variant...

Add a little lottery to marketing ... Who will be lucky, will get more RAM. Hurry to buy!!!

It works so for ages. Only newcomers are realising it now...

But there is only 233.4MiBs. In my RB750Gr3 all 256.0 MiBs is written. Where are the last 23 MiBs?

Where is it written that you should have 256M of RAM? You got a 233Mb chip, live with it

What a fortune!

You got a 233Mb chip, live with it

Hmm... This will make me unhappy... 233 is not so beautiful as 256...

Have you heard about gift horse?

I looks the same in my version of hAP ac²

Have you heard about gift horse?

Yes, and also about her teeth. But. But.
Ah, of course, i will live with this. I already bought hAP ac². I'm wait it from EuroDK. May be i will more lucky and my hAP ac² will have a SD-card slot or something else???

Mine hAP ac2 also have 233mb of ram. Also, I noticed that it has IPQ4019 SoC. Awesome! What SoC do you have?

Also, I noticed that it has IPQ4019 SoC. Awesome! What SoC do you have?

How did you checked that? Did you disassembled your unit? I could only check with command "/system resource irq print", and there I see 2 entries with "ipq4019_ahb" which indicates that it is IPQ-4019 as you said, however the specification on Qualcomm site says 1 GB RAM for 4019, and 256 GB RAM for 4018. So hard to says without disassembling the unit, but one guy disassembled it, and on his picture the SoC is clearly 4018. And one of his screenshot in the article also shows 233 MB RAM.

Edit: Ok, I see in Wireless/WiFi Interfaces, under the Type field that it is IPQ4019. However I still believe just the driver is named like 4019, the SoC itself is IPQ-4018.

Mine hAP ac2 also have 233mb of ram. Also, I noticed that it has IPQ4019 SoC. Awesome! What SoC do you have?

Can you send me screen from System > Resources ?

Now I want to dissamble my ac2
This may be not true, however there are quite a few IPQ4019 devices with 256MB ram out there. I believe 256MB - IPQ4018/1GB - IPQ4019 is maximum amount of RAM.
https://i.imgur.com/v8U1QUk.png

It's strange, but I see only two antennas, and the block diagram shows 4 antennas. For the first time I see that Mikrotik would use dual-band combined antennas. How do the transmitters not jam the receivers of the other range, while maintaining a decent sensitivity?

Translated by Google translator.

Labels on the circuit board says "2G CH0 + 5G CH1" ... the other is obscured by antenna itself, but I guess print would be similar (but with swapped chains).

The frequency of two WiFi bands are (radio wise) far away from each other with plenty of other occupied bands in between so that filters (both in TX and RX branches) can do very decent job. TX needs decent band-pass filter not to emit energy outside of ISM band (that would be illegal). RX needs band-pass filter as well to reject some adjacent-band interference which might lower usable sensitivity. Further more, RX needs channel-pass filter and this one is usually implemented in DSP software (or else channel switching would be a hard thing to do). Decent band-pass filter would have out-of-band attenuation of at least 40dB. Given that there are two band-pass filters in play (e.g. TX filter on 2G and RX filter on 5G), overall out-of-band attenuation inside single device should be at least 80dB ... if TX power is +20dB, that would mean -60dB at input of RX pre-amplifier. Which is not good, but not useless either ... given the nature of OFDM being used for recent WiFi standards where sensitivity is less of an issue than with other (legacy) technologies.

There are filters inside, that prevent any disturbance between 2GHz and 5GHz bands

There are filters inside, that prevent any disturbance between 2GHz and 5GHz bands

What about different HW specifications on units that have produced? Is mistake on product page or?

There are filters inside, that prevent any disturbance between 2GHz and 5GHz bands

What about different HW specifications on units that have produced? Is mistake on product page or?

Some devices have more RAM, like above posters noted. We can't adjust the product page, because then somebody will find LESS than advertised RAM and that is worse, than finding more.

Some devices have more RAM, like above posters noted. We can't adjust the product page, because then somebody will find LESS than advertised RAM and that is worse, than finding more.

Yes but this device will have 256MB RAM on all units or its lottary from first production batch ? Its mistery for most of users here.. Can you explain this more detally?

I think you over-complicate things, sometimes it happens that during the manufacturing, some parts didn't arrive on time, doesn't pass the QC, or simply become unavailable. In those cases it is much more reasonable to use other, maybe even more expensive parts, than stop manufacturing process. These are gifts, that can happen at any step of manufacturing, but is is good chance that if one board from this batch was with more ram that others will be also, so i would suggest to buy them now

Please, insert in to Part Number a release code, p.e:
- release 1 with 128MB
- release 2 with 256MB

Like a RB750r2 and RB750Gr3....
Because they are different hardware.

Please, insert in to Part Number a release code, p.e:
- release 1 with 128MB
- release 2 with 256MB

Like a RB750r2 and RB750Gr3....
Because they are different hardware.

.
Add release 3 with 233MB ...
And, please, charge for release 2 hardware extra money. We don't want to go through fine print in specs just to find out that we've got better unit for the same price.

Please note use of sarcasm in previous paragraph.

I really don't know what are people complaining about. I've got a RB951G-2HnD at home acting as VLAN switch / multi-SSID WAP ... and its 128MB RAM is much more than I'll ever need for this duties. Alas, I needed a device with some characteristics and I didn't dismiss the unit just because of too much RAM ... the price fitted my budget and that's it, end of story.

This is a very recurrent by Mikrotik:

viewtopic.php?f=3&t=125363

This must be the first time I see someone complaining about more RAM...

Short review, includes a board overview
I also do not match the description on the official site: https://i.imgur.com/Lj6sU34.png
Interesting, when it will be "fixed"(software bug or...?). And where is the truth?

This must be the first time I see someone complaining about more RAM...

We dont complaining , we are just currious why is different then specified in their product page. Nothing more.

This must be the first time I see someone complaining about more RAM...

We dont complaining , we are just currious why is different then specified in their product page. Nothing more.

We are even glad that this happened

Please, insert in to Part Number a release code, p.e:
- release 1 with 128MB
- release 2 with 256MB

Like a RB750r2 and RB750Gr3....
Because they are different hardware.

Sure and double your effort with all the certifications all around the world... no thanks.

Hi All,

After RouterBOOT firmware upgrade to 6.42rc46 the system resources shows correct amount of memory. I asked for a statement from MikroTik if they limit by intention the memory despite the unit has physically more memory, or was it a software bug.

So looks like its software bug and this device have 128MB ram onstead of 233MB that was listed before ?

So looks like its software bug and this device have 128MB ram onstead of 233MB that was listed before ?

Honestly I don't know what is the truth. I didn't get (yet) an answer from MikroTik here or in the other topic where I asked. I reverted back RouterBOOT firmware to 3.43, and again I see Total Memory of 233.2 MiB. So far this is my conclusion: if you have firmware 3.43, then you see more memory, no matter what is the ROS version.
On the photo in the article where someone disassembled the unit, I can see the memory has the label "NT5CC128M16IP-DI", so 128M may indicate that physically it is really just 128 MB. But in the article he also noticed he has 233.2 MB. In the datasheet of the memory it is also in the same row where they list all 128 MB module variants. On the other hand wikidevi initially said 128 MB, then later they edited to 256 MB, you can see in wiki page edit history.

So I don't know what to conclude here. Maybe if someone knows how to write a small script which fill in memory (just for test), then we can see if we can write there more than 128 MB or not

Maybe bad quality control of chip manufaturer?

https://mikrotik.com/download/changelog ... lease-tree

What's new in 6.42rc52 (2018-Mar-26 12:41):
*) routerboard - properly detect hAP ac^2 RAM size;

Has anyone tried to install v6.42rc52? I would be interested if it stays ~233 MB or not. Please note you have to upgrade firmware (RouterBoot), not only RouterOS.

https://mikrotik.com/download/changelog ... lease-tree

What's new in 6.42rc52 (2018-Mar-26 12:41):
*) routerboard - properly detect hAP ac^2 RAM size;

233 MB ...

233 MB ...

Hi Keyko, thanks for the feedback. Have you upgraded Routerboard firmware as well? Can you please paste the output of "/system routerboard print" command? (You might want to redact serial number, don't forget.)
Thanks!

RouterOS and firmware 6.42rc52. Still 233MB.

I made a test on my unit which runs now v6.42rc46 with firmware 3.43 in order to be able to determine that it really has physically more than 128 MB of memory. I set in Packet Sniffer Memory Limit to 128000 kb, and disabled Memory Scroll, and then started to capture traffic on all interfaces while generating traffic. I could really see that free memory was shrinking, and in used memory I could see in graph that it used ~175 MB of memory.

So I believe my unit really has a 256 MB module. I was not yet upgrading to v6.42rc52, but hopefully it will still detect ~233 MB of memory after Routerboard firmware upgrade to v6.42rc52

RouterOS and firmware 6.42rc52. Still 233MB.

Thanks for your feedback, in that case I will also do the upgrade in the evening.

I can confirm that by upgrading Routerboard (RouterBOOT) firmware to v6.42rc52, the issue reported here is gone, I can see again full amount of memory. /system resources print reports total-memory: 233.2MiB
So conclusion is that there are units with more than 128 MB RAM and you need either v3.43 or >= 6.42rc52 Routerboard firmware in order to have properly detected RAM size.

On hand i have 2 pcs of hAP ac2. In system - resources - 233 MB.
Inside of box you can find chips Nanya 2 Gbit = 256 MB

On hand i have 2 pcs of hAP ac2. In system - resources - 233 MB.
Inside of box you can find chips Nanya 2 Gbit = 256 MB

Hi, how can you disassembly and reassembly the hAP ac2? I can't disassemble the hAP ac2 without damage it.

On hand i have 2 pcs of hAP ac2. In system - resources - 233 MB.
Inside of box you can find chips Nanya 2 Gbit = 256 MB

Hi, how can you disassembly and reassembly the hAP ac2? I can't disassemble the hAP ac2 without damage it.

Look on the device from side of ETH ports - you will see small flat holes on short sides (next to power/ETH5). Carefully insert flat screwdriver in them...

On hand i have 2 pcs of hAP ac2. In system - resources - 233 MB.
Inside of box you can find chips Nanya 2 Gbit = 256 MB

Hi, how can you disassembly and reassembly the hAP ac2? I can't disassemble the hAP ac2 without damage it.

Right from Eth5 you can see hole.
In hole find latch. I use dental spatula.

BUT!... After 2-3 dissassembling you damage the latch.

On hand i have 2 pcs of hAP ac2. In system - resources - 233 MB.
Inside of box you can find chips Nanya 2 Gbit = 256 MB

Hi, how can you disassembly and reassembly the hAP ac2? I can't disassemble the hAP ac2 without damage it.

Right from Eth5 you can see hole.
In hole find latch. I use dental spatula.

BUT!... After 2-3 dissassembling you damage the latch.

Thanks!

On hand i have 2 pcs of hAP ac2. In system - resources - 233 MB.
Inside of box you can find chips Nanya 2 Gbit = 256 MB

Hi, how can you disassembly and reassembly the hAP ac2? I can't disassemble the hAP ac2 without damage it.

Look on the device from side of ETH ports - you will see small flat holes on short sides (next to power/ETH5). Carefully insert flat screwdriver in them...

Make it !

I got my hAP AC2. Into Resoursec write : Total Memory 106.3MB. So who got from first batch got +128mb ram. Others (like me) will be happy with 128MB ram.

Hello. I have hAP ac^2, and on board 256M

I have recently bought hAP ac² and it has 128 MB RAM.
Router was bought in beginning of March 2019 in Latvia (from Latvian distributor), total-memory: 128.0MiB, factory-software: 6.43.10, factory-firmware: 6.43.10, model: RBD52G-5HacD2HnD.
So looks like (at least some) more recently manufactured hAP ac² routers also have 128 MB RAM.

I am extremely interested in buying hAP ac² with 256MB RAM, however all on-line stores representatives claim that only 128MB RAM models have been supplied recently. This "lottery" might have been a good idea at the beginning, but it turned out a big frustration to me.

Yeah, to me too. I just bought one piece yesterday and while the dealer was confident they will have sent me 256MB version, after I got my hands on it, it turned out to be 128MB. I was angry but after all and reading this (and other) topic I decided to keep it and get over it. It is just the bad feeling in the gut about the dealer who just plain lied to me on the phone.
Otherwise I'm very happy with the acquisition.

Hello guys.

I`m got new one device but with 128mb RAM (
Can some one, who have 256mb IC and disassembled cover write here information about IC marking with 256mb?
I have plan about chandge 2 IC on 128 and 16 mb on more size.
May be possible install 512 or more capasity.

Translated by google translate )

Hello guys.

I`m got new one device but with 128mb RAM (
Can some one, who have 256mb IC and disassembled cover write here information about IC marking with 256mb?
I have plan about chandge 2 IC on 128 and 16 mb on more size.
May be possible install 512 or more capasity.

Translated by google translate )

Out of curiosity - for what reason?

Hello guys.

I`m got new one device but with 128mb RAM (
Can some one, who have 256mb IC and disassembled cover write here information about IC marking with 256mb?
I have plan about chandge 2 IC on 128 and 16 mb on more size.
May be possible install 512 or more capasity.

Translated by google translate )

Out of curiosity - for what reason?

The reason is not due to the fact that I do not have enough device capabilities, although with IP-TV sometimes is not good, but purely out of interest whether I can or not))
For the sake of, as they say, sports interest) Hobbies)

Translated by google translate )

Hello guys.

I`m got new one device but with 128mb RAM (
Can some one, who have 256mb IC and disassembled cover write here information about IC marking with 256mb?
I have plan about chandge 2 IC on 128 and 16 mb on more size.
May be possible install 512 or more capasity.

Translated by google translate )

I think that 256MB is the limit:
https://www.qualcomm.com/products/ipq4018

Hello guys.

I`m got new one device but with 128mb RAM (
Can some one, who have 256mb IC and disassembled cover write here information about IC marking with 256mb?
I have plan about chandge 2 IC on 128 and 16 mb on more size.
May be possible install 512 or more capasity.

Translated by google translate )

I think that 256MB is the limit:
https://www.qualcomm.com/products/ipq4018

I knew about the limit.
Meant something like nt5cc128m16ip-di
https://composter.com.ua/documents/NT5CC128M16IP-DI.pdf

Specific marking on a memory chip
The fact is that there is a difference in the number of balls and their location (figure).

Translated by google translate )

checked mine hap ac2, i have 256mb version, bought in Latvia, but it was in june 2018...

hello,

does anyone tried ROS 7.1 beta WifiWave2 package on HAP AC2 with 256MB RAM, WifiWave2 package https://help.mikrotik.com/docs/display/ROS/WifiWave2
My Hap AC2 is only 128MB thinking about upgrading RAM, SPI NOR Flash :)

Hello,

does anyone tried ROS 7.1 beta WifiWave2 package on HAP AC2 with 256MB RAM, WifiWave2 package https://help.mikrotik.com/docs/display/ROS/WifiWave2
My HAP AC2 is only 128MB thinking about upgrading RAM + SPI NOR Flash, but if it is doesn't work or package use digital signing there is no point in doing that :)

Sorry for double post.