hEX - missing usb hub support

RouterOS General
1

Hi,
I plan to use Mikrotik for out-band management and remote console server.
So I purchased 7-ports usb hub and numbers of Prolific PL2303 usb-to-rs232 console cables.
I succesfully tested with RB951G - all 7 console lines appeared and worked with remote access.
But when I plug hub to hEX (RB750g3) - only 1 console line appeared instead 7.

I noticed that on on hEX router EHCI and OHCI controllers are missing, maybe its a reason.

[admin@RB951G] > driver print 
 # DRIVER                                                                
 0 USB EHCI Controller                                                   
 1 USB OHCI Controller                                                   
 2 USB Prolific PL2303 Serial                                            

[admin@RB951G] > port print   
Flags: I - inactive 
 #   DEVICE NAME                 CHANNELS USED-BY               BAUD-RATE
 0   1-1.1  usb1                        1 Serial Console        115200   
 1   1-1.2  usb2                        1 Serial Console        115200   
 2   1-1.3  usb3                        1 Serial Console        115200   
 3   1-1.4  usb4                        1 Serial Console        115200   
 4   1-1.5  usb5                        1 Serial Console        115200   
 5   1-1.6  usb6                        1 Serial Console        115200   
 6   1-1.7  usb7                        1 Serial Console        115200   


[admin@RB750g3] > driver print                 
 # DRIVER                                                              
 0 USB Prolific PL2303 Serial                                          

[admin@RB750g3] > port print 
Flags: I - inactive 
 #   DEVICE NAME                CHANNELS USED-BY              BAUD-RATE
 0   1-1.1  usb1                       1 Serial Console       115200

Is it possible to make hEX work with hub and multiple usb consoles?

2

Isn’t there lack of power? Try externally powered USB hub.

3

Isn’t there lack of power? Try externally powered USB hub.

Yes, my hub is active with external power, its doesn’t metter

I checked some another routers, in summary:

  • CCR1016-12G, v6.40.4 - OK
  • CCR1009-7G-1C-1S+, v6.41.2 - OK
  • RB951G, v6.41.3 - OK
  • RB750G3, v6.41.2, v6.41.3 - problem exists
4

For anyone who consider to use hEX with multiple usb devices,
I contacted to support and after deep inspect the problem received next info:

Unfortunately, we are still investigating it and there is a possibility that this issue is due to hardware limitations and will not be fixed by software updates.

5

Thank you very much for the report and your careful research!

Do you or anyone else happen to know if the new hAP ac² (RBD52G-5HacD2HnD-TC (International), RBD52G-5HacD2HnD-TC-US (USA)) would also have similar issues with USB controllers?

6

Do you or anyone else happen to know if the new hAP ac² (RBD52G-5HacD2HnD-TC (International), RBD52G-5HacD2HnD-TC-US (USA)) would also have similar issues with USB controllers?

Received and tested today - there is no such issue with new hAP ac², all 7 consoles appeared.

7

Yep. But hap ac2 has another big problem… The WiFi.