CCR2004-1G-2XS-PCIe Router - No Access, No Reset Possible Via Netinstall, No LED, Maximum Continuous Ventilation

Hello dear community,

I am new to this forum (although I am a fan of Mikrotik and buy as much as possible from this brand for my network) and would like to thank you in advance for your help. In general I manage to solve my problems by following the documentation or by searching posts but after having tried everything for several days, I have not managed to solve my problem. It concerns a brand new CCR2004-1G-2XS-PCIe router I bought recently:
https://mikrotik.com/product/ccr2004_1g_2xs_pcie

Problem description: the LED lights don’t come on anymore (even when rebooting and pressing reset), the fan is running at maximum and it seems impossible to install from Netinstall.

Details: I had connected the MikroTik PCIEe router to an available slot on a PC, connected the management port to a laptop running Windows 11, successfully logged into the WinBox 4 console, added a password and updated the latest stable version of the router (uploaded the file routeros-7.16.1-arm.npk and rebooted, successfully updating the card).

  • Everything was fine, but… when trying to configure the card, I mistakenly disabled the management port :man_facepalming:t2:


  • The only way to communicate with the device was then to reset the router to factory settings with a manual reset in accordance with the following documentation:
    https://help.mikrotik.com/docs/spaces/UM/pages/116555782/CCR2004-1G-2XS-PCIe
    https://wiki.mikrotik.com/Manual:Reset


  • The reset of the card didn’t work according to the documentation and since first closing the reset hole (jumper), then it’s been making the continuous maximum fan noise as long as I don’t switch the PC off. In addition, the lights don’t come on at all when I reboot, or even with reset, even when I try to maintain contact with metal on the reset hole for several minutes. My first thought was that it had gone into Netinstall mode and I followed the documentation, installing from the netinstall-7.16.1.zip and netinstall64-7.16.1.zip versions.
    https://help.mikrotik.com/docs/spaces/ROS/pages/24805390/Netinstall


  • By following the documentation and following different resolution ideas from this forum and from reddit (Netinstall from Windows 11), unfortunately nothing helped: the card was not never from Netinstall (either connecting through the management ports or the sfp28 ports).

I would be very grateful if you could help me. I think it’s possible from the behaviour of the device (LED lights don’t turn on anymore, maximum ventilation) that there is a hardware problem involved.

Enjoy your weekend!
Many thanks,
mikrotikds6e8

Has anyone an idea on how to solve my problem? Thanks in advance!

I had lot´s of issues with that card, so I stopped using it a long time ago. There were What I was certainly able to do was to netinstall new versions a few times and as I remember there was some LEDs flashing.
I read on the forum that people had issues with latest versions of ROS with this model.
Even in the last 7.17beta5 there was some bugfix included for this card :

ethernet - improved system stability for CCR2004-1G-2XS-PCIe device;

I´d try to netinstall the latest beta or: try to contact your distributor, to see if they are willing to do an RMA.

I have only experience with linux, but I would try a reset and a new netinstall.
Try to be patient and see the result of netinstall.
Card should be then come up again in the default configuration, sfp1 and 2 in passthrough mode and ether1/2 in Bridge mode as admin.

Did You manage to get card working back?
I’ve got exact same situation.

Thank you for all your indications and contributions to my post. Unfortunately, the CCR2004-1G-2XS-PCIe router card mentioned earlier in November still doesn’t work. Edit: This card, referred to in the rest of this comment for more clarity as the “faulty card”. I bought a new CCR2004-1G-2XS-PCIe router card which has since worked, referred to in what follows as the “new card”.

I first tried everything using the information available on this forum and elsewhere on the internet, and within the limits of my knowledge and skills to restore the faulty card to its original state.

I then gave the faulty card to a network engineer friend in December and he in turn tried everything without success in his spare time and finally returned the faulty card to me at the beginning of March.

During this time I bought a new card and paid a MTCRE Mikrotik expert to help me configure the new card. Since CCR2004-1G-2XS-PCIe is not well known in the Mikrotik ecosystem, the consultancy costs rose to €450, which brought the total cost of the two cards + consultancy to well over €800. More than the cost of CCR2004-1G-12S+2XS! Taking into account my own hourly rate (tens of hours of testing & research), buying router CCR2216-1G-12XS-2XQ would have even been much profitable / wiser.

For those who are interested, there are a lot of learnings and specificities about CCR2004-1G-2XS-PCIe, based on my better experience with the new card. With a correct configuration and if not unlucky with a faulty card, it works but:

  • It has to be mounted on a Linux system for optical transceivers to be recognised (even in router mode, even though it’s supposed to be able to be standalone, this isn’t 100% the case - won’t work if the host is Windows);
  • The two SFP28 ports must absolutely be configured at the same speed, which means that if the ISP sends 25 Gb or 10 Gb on the WAN port (Internet access), it needs exactly the same speed on the LAN port (to the local network). Otherwise no link possible on the LAN side;
  • With access to 25 Gbe incoming, the test results are very disappointing. The card is a clear bottleneck in router mode.

Unfortunately, the distributor clearly states in its warranty policy* that no product, even a faulty one, cannot be returned. So I’m thinking of contacting Mikrotik’s RMA department to return the faulty router PCIe card.

Good luck to all those in the same situation!

(*) edit: is not an EU-based provider

Of course, if you don´t like tinkering a lot with your hardware & ROS, there is no point in buying an MT privately.

For those who are interested, there are a lot of learnings and specificities about this card. With a correct configuration and if not unlucky with a faulty card, it works but:

  • It has to be mounted on a Linux system for optical transceivers to be recognised (even in router mode, even though it’s supposed to be able to be standalone, this isn’t 100% the case - won’t work if the host is Windows);
  • The two SFP28 ports must absolutely be configured at the same speed, which means that if the ISP sends 25 Gb or 10 Gb on the WAN port (Internet access), it needs exactly the same speed on the LAN port (to the local network). Otherwise no link possible on the LAN side;
  • With access to 25 Gbe incoming, the test results are very disappointing. The card is a clear bottleneck in router mode.

Before buying MT hardware, you must check the throughput:
https://mikrotik.com/product/ccr2004_1g_2xs_pcie#fndtn-testresults
Of course this card is not capable of line speed routing!

Unfortunately, the distributor clearly states in its warranty policy that no product, even a faulty one, cannot be returned. So I’m thinking of contacting Mikrotik’s RMA department to return the faulty router PCIe card.

Strange distributor policy! I´m sure something like that is not allowed at least in the EU, but probably in other areas either?
The card seems to be functioning according to your description on Linux. So there is no HW failure?
If you check the forums you can read about compatibility issues with Windows, ESXi, BSD, so yes that´s not nice and I don´t thintk MT provides you that info anywhere.