When you order a batch of 1000 (or even more?) pieces:
It’s useless to complain because the problems users are running into (instable system due to crappy USB cables and the crappy micro USB connector) don’t affect them. And they don’t care as usual. I would suspect they use only quality cables internally and can not even imagine how many crappy USB cables exist in the wild. Or they simply don’t care. We’ll never know…
These connectors are THT (through-hole technology) and is mounted after the reflow process, if I remember correctly. And because they have samples, why shouldn’t they sell /send some with DC-Jack. In the posting was no comment about quantity.
DC-Jack and Micro USB jact , just can choose one , for development board ,we choose micro USB , if you need DC ,we also can support to you. but just micro USB board in stock.
Thanks for choosing the wrong one by default.
I’m currently trying to investigate whether these fixes for HW accelerated video (H3 / Orange Pis) also work with the A83T. And guess what: If I connect HDMI display, an USB keyboard and mouse and try to compile something the board simply powers off.
Again thanks for this great micro USB DC-IN “solution”.
This a big advantage of the LeMaker Guitar - this device is only available with the reliable DC-Jack
we have test all function , micro USB can support fine, so we choose Micro USB , it is easy to find the adapter for user.
if some one want use M3 to use as a product, we can support it with DC-jack.
Yes, we all know and I’ve written it already before here in this thread:
I would suspect they use only quality cables internally and can not even imagine how many crappy USB cables exist in the wild. Or they simply don’t care.
So even if hundreds of users will complain about this crappy powering method you won’t change anything because internally with best quality connectors and cables you can not reproduce the issue. Useless to complain, only way to solve the problem is to avoid your products?
Here you find the specs: http://mgvs.org/public/shema/datasheet/usb_20/Micro-USB_final/
The connector is rated 1.8A max. How should this work with a board with connected USB peripherals, a connected display and the SoC being busy on both CPUs and GPU? And is it really that hard to understand that crappy cables
lead to voltage drops below an acceptable minimum where the PMU simply shuts off due to undervoltage protection
are widely used out there at your customers
And they used a DC jack and not that weird micro USB thing:
I just added the consequences for every customer that bought the M3 because of “octacore @ 2GHz” to the linux-sunxi wiki:
Good news for M3 
Nope, bad news. You need solder skills to be able to use the advertised CPU performance. That’s just weird.
I fear this is a must-read. Unfortunately most of the M2/M3 customers discover this forum only after they already bought the devices.
Do you still think so?
I’ve never seen on any photo or video you showed here that the SoC is used with a fan or heatsink? But according to the review at the start of this thread, the linux-sunxi wiki http://linux-sunxi.org/Banana_Pi_M3 and countless other posts here without a heatsink the CPU will not be clocked that high and then the power requirements are rather low. And problems occur when using peripherals or a heatsink due to increasing power consumption.
Can you please provide a clear company statement whether you still think the micro USB connector is an appropriate power solution?
I am not the voice of BPI team, but I realized that DC is a better choice for development boards.
However, it is not that MicroUSB is bad, it is just that development boards should have more power for add-ons. With a MicroUSB plugged in to my phone when I am gaming the phone charges incredibly slowly b/c the game is power hungry. Note that the phone also does not have ports taking power from it like USB ports and stuff.
On a development board however the 5V 2A cannot cover all the power needs for the SoC and extension ports on the board.
One intersting thing to note is both the DC port and MicroUSB port are rated at 2A from the adapter. I guess the cable of the MicroUSB can account for some power loss and a higher amp rated DC adapter will provide more power.
And where is this ‘voice of BPI team’? Aren’t they able to answer simple questions regarding their products? Is all we can expect here wild guesses from other individuals?
Welcome, to the jungle 
the SinoVoip Foxconn jungle, where rarley any development happens 
Of course it is since it’s limited to 5V/2A (10W) and that’s not sufficient for a board that needs up to 5V/3A. The only real measurements I’ve seen so far speak about 3A when the board is used with common peripherals under full load: http://linux-sunxi.org/Banana_Pi_M3#Sudden_shut_offs_.2F_maximum_consumption_.2F_cooling_vs._consumption
And the other problem is that the micro USB connector let people try to use the most crappy phone chargers ever to power their device. That might work on devices that do not consume that much (Raspberry Pi, Banana Pi M1/M1+ or the cell phones the chargers were bought for) but not with the power-hungry M3.
Anyway: Given this lousy decision, the slow USB-to-SATA bridge, all the broken OS images (why not just one that works instead of many that all suck in one way or the other?) and the non-existent support situation it’s clear now what to do: Avoid the M3 and close the account here.
dear tkaiser , i have let Judy send a BPI-M2+ to you.
you have help us many ,and i like you. :smile, you have do many test on our product, it is a hard work. thank you again.
Sup, can we get info it there will be some kind of normal apt\pac repo for the systems to not go the fancy burning the img update procedure? Also the board works like a charm, got hard wired it to a normal PSU , plus some active colling with thermal sinks and 52c* like a charm, thou it hangs on very long term hard cpu tasks like video decoding. I’m in a bit of investigation, probably the mount for the disk or the ntfs-3g is failing, or just some random out of memory.
Ow ow and…please can we next time have a real sata, really really real sata? I really want to put a dev board on a custom build case to handle the webserver\tomcat\db. maybe some raid stuff. And it would be like great to have it like in router for factor , like those R series but with less Ethernets, like only 2.
Also one minus i encountered, thou the low cpu speed it handles really sad with apps that depend on fast cpu cycles, that’s the most disappointment :<