@simon does the powering issue on v1.0 maybe affects 12v powering (not usb-c as @balika011 is powering via usb-c without issues,but also without the wifi-card)? I have a 12v/6a power supply and with wifi-card i had no issues on v0. On v1.0 i have hang on wifi initilization. @dangowrt reports similar and uses now 19v/3a on the dc jack without issues.
You can buy from them for ~90 eur shipped from China: Banana Pi Bpi-r4 Router Board With Mediatek Mt7988a Filogic 880 Quad-core Arm Corex-a73 Design 4gb Ddr4 Ram 8gb Emmc 128mb Spi - Buy Banana Pi Bpi-r4 Router Board,Mediatek Mt7988a Filogic 880,Arm Corex-a73 Design 4gb Ddr4 Ram 8gb Emmc 128mb Spi Product on Alibaba.com
The one you can buy publicly is the 1.1 version.
The main difference i found between 1.1 and 1.0 is the on board eeprom were configured (address strapping resistors) wrong and it was on address 0x50 instead of 0x57. This can easily fixed with some micro-soldering skills.
As far as I can tell the 1.0 boards sent out have their R73 removed, so the eeprom doesn’t cause any conflict. @frank-w can you please verify if your board has R73 or not?
Mine also came without an RTC module, a feature that I don’t mind not having, but the USB-C works on mine, it has the correct part installed, unlike @dangowrt 's board.
So the board you buy now should be a 1.1 and have all these issues corrected.
I ordered an R4 last week and received a shipping notification today. Nice!
Is there an ETA for the WiFi 7 card going on sale?
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The latest wifi driver solves this problem, it is not affected by the power supply.
This is the WiFi7 NIC we plan to make in the near future, but since the MTK’s driver is not yet perfect, so it will not be released until 2024Q1 at the earliest.
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Do you refer to mt76/master or net-next? Do you have a commit id where it is fixed? Strange that daniel has fixed this by using higher voltage on same socket,but maybe explains why the openwrt i tried was working…but have not enabled all wifi devices
This new version of wifi nic has antenna aggregations (do not know correct name) to reduce the count of antennas?
You can ask wei about this 
We replaced the original MT7975N (2.4G, 4x4) and MT7977B (5G, 4x4) with MT7976C (2.4G 2x2 + 5G 3x3), and then used a diplexer to aggregate 2.4G and 5G together (same as R3mini),
although The overall speed is reduced a bit, but the number of antennas is reduced significantly, which we think is worth it.
As for the 14-antenna version, we will check it later and decide whether we need to continue doing it or not.
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please apply below patches to support > 4GB DRAM.
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net-next code looks completely different in these line…and is already fixed as i get the wifi interfaces without issues 
Any guesses on the selling price? 50-100$ 100-150$ or more than 150$
Will a kit be available on Amazon US?
I might be asking a dumb question, but does the SFP port support a Direct Attach Copper (DAC) cable?
In my use case, my router is a PFSense PC with a x520-da2 card. My plan is using the BPI-R4 as a wifi7 access point running OpenWRT.
I have always used these x520-da1/2 cards for direct connection between servers / computers that are nearby each other. Less complications of using a module and should save energy/heat as well.
Thank you!
Yes, I’m mainly using the LAN SFP port in that way, and works great in 10GBase-R mode (with Mellanox, RealTek and Marvell link partners tested so far).
Same here, much less heat problems and less consumption, 10GBase-T 30m range copper PHYs eat about 2W more than a DAC cable on each end, so for one link that’s ~ 100Wh a day, so 35 kWh per year, and that’s real money, can easily buy you that DAC cable…
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Thanks for confirming @dangowrt
Another questions, on the PoE version, is the BPI-R4 being powered by PoE? Or is it actually powering another device? I assume it’s the one being powered, but just wanted to confirm.
That’s correct. The PoE-version of the R4 (which isn’t produced yet and cannot be bought anywhere, as far as I know) can be powered over PoE on the 2500M/1000M/100M/10M RJ-45 port present instead of SFP2/LAN.
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Dang, I want one of these soo bad, especially after getting my BPI-R3 working so good.
However, I am really wanting to connect a Quectel 5G 5G RM521F-GL to it, as that is my service provider internet connection, T-Mobile Home Internet.
Ten gigs passive dac works like a charm.