I have a question regarding the power requirements of routers.
I have a TP-Link W9970 running FTTC 40/10 service. It works great.
I don’t use the wifi on this unit as it has been reports as rubbish, so it is turned off. Am using a Netgear unit for wifi.
The W9970 has a USB port (2.0 spec, I understand) such that a USB 3/4G dongle can be used for fail-back. I am currently using such a dongle (Huawei E367 3G).
The PSU to the W9970 is rated as Output 12V 1A.
So to my question. How much power does my W9970’s functions use, assuming I had wifi on. By that I mean, how much power, Amps, does say the modem side use of the 1A available.
The reason I ask this is because the E367 (which I have tested) uses .05/.7A at idle and about .25A (with peak of .28A) during use and this therefore much reduces what is available to power the rest of the router’s functions.
I did run across this page which says that one can either use a more powerful PSU say 2A for the router or a powered USB hub as resultant power shortages without these measures can affect both the router and the speed of the dongle when in operation.
https://www.ofmodemsandmen.com/power.htmlThe reason that this got me thinking is that I was considering upgrading the E367 to a 4G dongle but ran across several articles stating that some 4G dongles were power hogs when in use with some having power requirements of 800mA (0.8A) and clearly > USB2.0 specs of 0.5A.
I have tested the E367 for a short while by pulling out the phone cable to the router and it seems to work ok with DN 5-6meg and Up 1.5-2 meg
This post is more of an interest topic rather than a problem if you see what I mean.
Has anyone researched this topic at all.