RBM33G whith two LTE modems

I have is RBM33G and 2 lte modem SIM7100E minipcie.
Both modems are determined by the system in system-> resources-> usb under the numbers 1-1 and 1-2.
The connection on this modem is supported by PPP, it is created by default, but only one on the modem 1-1, when trying to create a PPP connection manually for the second modem, an error appears that the port is busy. In system-> port one usb.
How to make two modems work?

I haven’t RBM33G but I know that must be enable USB2.0 to this center slot by leaving jumper near USB port - you do Jumper off ?
The PPP is busy when example in other terminal you do any at command’s. Please check if after reboot who used this port, info here:
I5RX3ysj8u.png

yes of course the jumper i removed first thing.
I think the bug in routeros, both modems are defined, but only one works.
rbm33_mik.PNG

But in Port List you have only one USB device detected and this mean you cannot create a new PPP connection on next usb port - it don’t exist.
Look in my old setup with 2x USB Modem by USB Hub.
winbox_v3.20_64_m7BGx9QkSy.png
.
Please replace the modem’s in socket’s.
If second one will be work AND this who work not be seen as usb THEN this will be proof of:

  • That modem’s work’s the same internal config and maybe we not must search internal at command to do MBIM and other magic
  • Problem with not detect the second USB device as usb1|usb2 is ROS stuff.

Please be sure your ROS is updated and share information what version you use.
In https://wiki.mikrotik.com/wiki/Manual:USB_Features is not info about RBM33G but please check this usb-mode feature:

[admin@MikroTik] > /system routerboard usb set type=
USB-type-A  mini-PCIe

When all this not work then no wait and do supout.rif and send it to support@mikrotik.com .

ROS version 6.46.1. I swapped modems, included only one modem on different ports - only one modem works at a time, both do not work.
I will write support@mikrotik.com.
rbm33_mikr.PNG

nevlax

Please read this topic - for me your is the same nature and the same Vendor.
http://forum.mikrotik.com/t/two-lte-minipcie-modules-not-working-on-rbm33g-bug/120893/1
and FAQ for SIMCOM modems:
https://techship.com/faq/how-to-configure-simcom-sim7100-sim7500-and-sim7600-series-modules-for-usage-in-windows-8-and-10/ → “How-to: Automated connection establishment with SIM7600E-h when using RNDIS USB mode”