Routerboard Usb Serial

RB1100 X2AH Bricked? USB to Serial Com Settings?

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When trying to add an APC UPS to either a RB493G or a RB411UAHR via the USB port the drop down box only shows the serial0 port and no USB port option. I ve tried serveral different OS versions and none of them give me the USB port as an option to connect to the APC UPS. I have tried two different APC UPSs and I am using the factory APC USB to RJ45 data cable that comes with every APC ES550 etc.

Just found a RB433UAH laying around and it sees serial0, usb1 usb2 as available options when adding a UPS. It is running v4.10 and is able to connect monitor the APC UPS statistics without any problem.

I tried downgrading the RB411UAHR to v4.10 and it still does not give me a USB port as an option when trying to add a UPS.

I upgraded the RB433UAH from v4.10 to v5.0 and it still sees the serial0 and usb1, but I no longer have usb2 as an option. I am able to choose usb1 when adding a UPS and connect to the APC UPS.

What is different between the RB433UAH and the RB411UAHR RB493G USB ports and why did upgrading the RB433UAH from v4.10 to v5.0 result in usb2 disappearing.

What do I need to do in order for the RB493G to give me the USB port as an option when adding a UPS.

i am not 100 sure but ut may be because the USB ports on the RB493G and the RB411UAHR are not powered and you need to use a power injector, maybe. You can just use a powered usb hub.

Possibly, but it think I read in one of the release notes that MikroTik specifically talks about the RB4xx supporting APC UPS monitoring. I don t think power is needed to communicate with the APC UPS as the UPS is already powered.

They do support apc ups monitoring AFAIK. Cant hurt trying a powered usb hub.

So, can anyone from MikroTik explain what I may be doing wrong with the RB493G vs. the RB433UAH board. The RB433UAH running v5.0 can see the APC UPS, but the RB493G running v5.0 or any RouterOS version cannot.

Is there a specific setting somewhere in the RB493G that enables the USB port to be used.

Every USB device essentially needs the bus power - to initiate the bus enumeration process correctly. The RB433UAH supplies power to the USB port by default, while RB411UAHR and RB493 doesn t.

Is this is true and can MikroTik can confirm this. You mention power to the USB port by default. Is there a setting to enable power to the RB493G USB port.

If this is correct, than I don t see the benefit of having a USB port on a RouterBoard that can t be easily used. Is there some sort of mini USB hub that can be powered by the RB493G, so that the USB port can be used to monitor a APC UPS. Just what we need; more clutter at a site..

Default is incorrect word - the USB power is hard routed at the PCB of the RB433 device, and the power convertor is implied there too and cannot be turned on or off in any way. The first and easiest way for you is to get the USB power injector and external power supply to power up the USB port and make it possible to enumerate USB devices.

The second way is to make some custom power convertor, which could convert the 18 volts of the main power supply downto 5 volts needed by USB port. This convertor has to be soldered to the appropriate pins of USB port. The result is the same, but no external boxes and wires will be used. Such a convertor could be built with LP2950CZ-5.0 linear regulator - but it can provide just 100 mA of current, so this port will be able to communicate self-powered USB devices only.

Same result could be obtained, when DC/DC boost convertor is used - many of them convert from 3.3 volts to 5 volts.

All these voltages 18 and 3.3 volts are present at RB493 s cooling fan connectors

Ok, using a voltmeter I find the RB433UAH does show 5VDC present on the pins of the USB port, but no voltage present on the RB493G. What a jokewhy woud MikroTik do this.

Poking around the RB493G board I find 2.2VDC, 3.3VDC, 7.7VDC, 22.9VDC and 2.2VDC.but no 5VDC. So, where do I go from here. Will tapping into the 7.7VDC be too hot for the APC UPS. Or will tapping into the 3.3VDC be too little voltage. I guess it won t hurt to try the 3.3VDC

Possibly, 3.3 volts will be enough to discover a new connection - there are just some resistors in UPS powered from the USB.

But to make it correct please read my previous message and decide what circuit to build.

I had some time to play with my 3.3VDC idea and it worked. A simple jumper from the 3.3VDC pin to the USB pin was all it took to get the RB493G to recognize the APC UPS. So, it looks like all our RB493G routers will be getting this modification in order for our APC UPS monitoring script to work.

Do we know if MikroTik will make this mistake again on future boards. Will the RB2100 have a USB port with 5VDC or not.

MikroTik RB493G USB Power Modification.jpg 141.29 KiB Viewed 13762 times

RB411U, RB750U and RB433 do supply power to their USB ports

ElectricCat wrote:RB411U, RB750U and RB433 do supply power to their USB ports

I just checked a RB411UAH here on my desk and there is no power supplied on the USB port. Not sure if you have a newer version than mine or possibly just mistaken.

I am happy to report that the half a dozen or so RB493G s that I ve modified are all working well and reporting my APC UPS statistics nicely. I would MUCH rather not have to spend the five minutes modifying each RB493G board to accomplish this and hope MikroTik is listening. Let s hope MikroTik supplies voltage on the USB port of the up and coming RB2100.

Indeed, the RB411UAH and RB411UAHR does not supply power to their USB ports. But RB411U does

First RouterOS version: 2.3.18

the mentioned boards that don t supplu USB power need this adapter: 99

No answer to your question. How to write posts

In addition, customer has to purchase an additional 5VDC power supply.

Yuck. What a mess that would make of things hooking all that up. Seems to me the simpler solution is for MikroTik/RouterBoard to make sure all boards have 5VDC present at the USB port. Until then, jumping 3.3VDC across the board is the best solution for us.

We are very interested in the RB2100 due to it s SFP. Will the RB2100 have 5VDC present at the USB port.

I got my RB493G board last week and now when I was playing around with it and was going to experiment with a 3G modem connected to the USB, I don t have a micro-SIM or what form factor this board supports.. Anyway I was playing around with it and noticed that the board didn t recognize it so I search the forums and found this..

Man was this a disappointment.. And I don t really understand, why have a USB-port if it doesn t work without an external powersupply for the USB port.

BelWave was that all you did. Soldering a cable between those pins. Do you think that can power up a USB 3G dongle or a memory stick.

Thinking about doing this as I don t want a second powercable and some extra stuff just to get the USB port working..

It states, clearly, on the product page that you need power for USB. How can you be surprised/disappointed about something that is mentioned in the product details.

It has not always been so clearly posted.

I can also understand people having issues with this. If you bought a car and it did not come with windscreen wipers even if the pamphlet told you so customers would still be pretty put off by the product.

If Normis chose to be polite, he could explain that there is no 5v power supply on the RB493G so to support USB power they would have had to add a 5V regulator at a few cents extra cost and possibly larger circuit board size.

There are certain bits of information about MT products that I have to hide from the client. They would see this as a very low quality and questionable product for hokey engineering decisions like this.

he could explain that there is no 5v power supply on the RB493G so to support USB power

didn t I explain it in this same topic. like was said above, this information has been always available in our datasheets.

Will the RB2100 routerboard that has the SFP port have a USB port with 5VDC.

Yes, all we ve done is solder a jumper from the 3.3VDC pin to the USB port. That was enough voltage for the router to see the USB port and communicate with the APC UPS. I have no idea if the 3.3VDC is enough to power a USB 3G dongle or a memory stick, but I m not sure what harm there would be in trying. We modify every RB493G we purchase by adding this simple jumper. It is valuable information to know when line voltage has been lost and we have a site on battery backup. This gives us time to contact customers and get to the site with additional power before we go offline.

BelWave wrote:I had some time to play with my 3.3VDC idea and it worked. A simple jumper from the 3.3VDC pin to the USB pin was all it took to get the RB493G to recognize the APC UPS. So, it looks like all our RB493G routers will be getting this modification in order for our APC UPS monitoring script to work.

traducción del español al inglés

Thank you very much for this information BelWave I purchase a USB HUB USB port g 11 flt 7 with 5V power supply 2Amp and did not work, I soldered the jumper for your advice and now I can see the UPS does, however leave the 493G USB hub connected to UPS and leave it connected to USB Hub

Out of curiosity also connect a pen drive of 4 Giga KingstowDt101 the USB hub and does not recognize it will be normal or will I have to try other pendrive.

jumper Usb 2 640x480. jpg 231.07 KiB Viewed 13013 times

all future products will have powered USB ports.

Location: Auckland, New Zealand

normis wrote:all future products will have powered USB ports.

Great to hear. Thank you Mikrotik for constant product improvement.

Really good information to know. The simple RB493G modification we ve been performing to monitor UPS status has worked flawlessly, but very happy to hear all future RouterBoards will have powered USB ports.

Does this include the soon to be released RB2100. When will the RB2100 be shipping or is it shipping already.

yes, this product will also have USB power on those models which will have USB ports. no, it s not shipping, it will be available in Q4 this year.

First RouterOS version: 2.9.51

I have a 411UAHR and haven t been able to get a usb power injector for it.

So I scavenge my archives and come up with a 5v dc adaptor and a male to female usb cable.

I ve cut and joined what I think I should green to green and white to white, both for data; red to red to red for 5v and black to black to black for grnd.

Question: does the male end that goes into the 411 of the male to female usb cable require power as well or just data. i.e Does the injector supply power to the usb device only or to the usb port on the 411 as well.

I m sorry, having some difficulty attaching a photo.

Can you please tell me which type of ups do you use. I have APC BACK 500 CS it isn t smart and in case I add power source to usb and use original RJ45/USB cable i can t see nothink in UPS bookmark in winbox.

I can see only choice Port: serial0 and it s not possibility to add another one. Is there something to be fulfill for configuration of USB port using for UPS connections.

APC UPS sometimes are set up as HID device, in this case port will not be displayed in /port menu. But when you attempt to add /system ups add port you might get auto completion with required usb port number as expected. That is solely due to APC making their devices to be recognized as USB HID. Older models usually will get the port settings as expected.

Janis: I tryed to add new ups trough Terminal. Now I was succesfull. But I can t still change the port. I can see only choice serial0 despite of USB in menu System Resources is printed. Have I to set up the USB.

There is possible to see the possibilities for setup.

On some czech forum I found that similar type of apc communicate trough USB port, not trough serial. But how is possible to set the port i didn t found.

with USB HID devices prot will not be displayed but in terminal you should be able to set the value of usb1 u tab

also, if you use newer APC UPS you might encounter problem that new protocol is implemented by APC and they have not released any details how to get any useful data from them.

So thanks Janisk for avice. I try to add power source to usb made by voltage regulator. Schematic is here

This edit add 5V using 78M05 is max 0,5A to pin 1 of USB independent of power voltage value it works approx. from 8V to 24V. Then APC info works trough USB correctly. For basic series BACK UPS 500CS you can read basic info like baterry charge, ups status etc.

So for some deices can be 3,3V enought, for some not. If you are not sucessfull with 3,3V described above try to add external power source. I hope this can help somebody else.

First RouterOS version: RB493AH.

quote Radek Janis: I tryed to add new ups trough Terminal. Now I was succesfull. But I can t still change the port. I can see only choice serial0 despite of USB in menu System Resources is printed. Have I to set up the USB.

I am having the same problem. The RB493G is not recognizing the USB port at all and not giving me that option.

I am using rOS 5.14. I even tried the command line.

/system ups add port usb1 disabled no

input does not match any value of port

/system ups add port usb0 disabled no

/system ups add port usb2 disabled no

Also, I am using one of those external power adapters with a 5V supply from a powered USB hub.

What do I need to do to make the USB work.

Never mind. I tried it with the powered USB hub and then it worked. I guess that s my solution.

bonnecomm wrote:Never mind. I tried it with the powered USB hub and then it worked. I guess that s my solution.

Let me know please the type of HUB, recently I tried connect some USH hub and Flash together with APC and it didn t work even separately. This was USB hub type like this

I didn t check power consumption, but together with PC the hub works fine.

Is there any compatibility list of possible HUB, or it is necessary to config connected HUB first.

Mine is a Vantec Go-2.0 powered USB hub. The APC I tried it with is an older one. I ll be trying it with a new APC tomorrow. I ll post on that after I m done.

After some delays, the RB493G is installed with its Vantec Go-2.0 USB hub. And it kind-of talks to the new APC Back-UP ES 750. The only thing it is actually able to see is the Serial Number: 4B1023P45521.

However, while installing the box in its new home, I took my EeePC 901 Netbook with me. The netbook runs Ubuntu Netbook ReMix 10.4 along with all of the critical updates. It had no problem getting all of the data from the APC 750.

I mention this because I m fairly certain MikroTik complaining that APC hasn t released the protocol is no longer worthy of continued respect. The information is out there and I m willing to bet it s open source.

Would it be safe to connect rb411uahr usb port to an active usb hub. It means that there will be some voltage at the routerboard USB pins from active hub.

Product group. Filter the products by group, and then by their specifications.

The installation procedure is described in deep details on the MikroTik RouterBoard 433 page. It is the exact same procedure for both boards.

Neilson wrote:Have you tried forcing the backup bootloader.

Yes, I have done that, but nothing after. Check it out.

Press any key within 2 seconds to enter setup

What do you want to configure.

r - reset booter configuration

n - boot from NAND, if fail then Ethernet

1 - boot Ethernet once, then NAND

3 - boot Flash Configure Mode once, then NAND

your choice: e - boot over Ethernet

your choice: g - upgrade firmware

e - upgrade firmware over ethernet

s - upgrade firmware over serial port

your choice: n - boot from NAND, if fail then Ethernet

your choice: b - booter options

Select which booter you want to load:

2 - force backup-booter loading

your choice: 1 - load regular booter

your choice: r - reset booter configuration

NetInstall Description. NetInstall is a program that runs on Windows computer that allows you to install, reinstall or reset MikroTiK RouterOS onto a PC or onto a.

RouterBoard RB435G description. Five miniPCI slots and three Gigabit Ethernet ports give you enough connectivity options to use the RB435G as the central part of your.