Yes, I was referring to that statement. I want to use it in an alix apu2 ( https://www.pcengines.ch/apu2.htm ) no mention in the docs ( https://github.com/pcengines/apu2-documentation/blob/master/docs/APU_mPCIe_capabilities.md ) about SPI support though.
Was planning on using https://github.com/RAKWireless/rak_common_for_gateway
Was planning on using GitHub - RAKWireless/rak_common_for_gateway
That’s precisely what is not recommended, as the USB latency really limits agility on a busier network
For picoGW solutions which are sensible I should also mention that the nFuse seems to have compatibility issues with some internal mPCIe slots. You might consider it, but in an external holder connected to a USB port.
Even if I use the SPI version? I understand the USB version has timing issues.
https://github.com/RAKWireless/rak_common_for_gateway states:
“Added support for rak2247/rak833 spi version.”
Am considering: https://store.rakwireless.com/products/rak2247-lorawan-gateway-concentrator-module?variant=29444341923885 (SPI, not USB)
It’s unlikely your embedded PC supports SPI. Certainly not on the mPCIe connector - there isn’t even a standard pinout for that, because SPI is not part of the mPCIe spec the way that USB is.
Presumably the sell that embedded computer for purposes other than LoRa/LoRaWAN
What do-it-yourself (mpcie) concentrator would you reccomend?
waiting for a sx1302 based mpcie board? like: https://www.cnx-software.com/2019/10/16/semtech-sx1302-lora-transceiver-to-deliver-cheaper-more-efficient-gateways/
Your issue isn’t the concentrator, but the host.
Either get a host with SPI, or get a pico GW concentrator
Ok, but it’s confusing when they sell it for exactly that purpose, it’s even called: " LoRaWAN™ Gateway Concentrator Module"
I thought you were asking about the embedded PC chassis.
The FT2232 USB based LoRa Concentrators are obsolete configurations sustained by demand of customers uninformed enough to buy something better like the SPI configuration, or if they must use USB, the pico GW design that Semtech engineered precisely to solve that problem.
Do you know a SBC host which does support this non standard spi use in mpcie formfactor?
I wasn’t clear
SPI yes, my question on picking one was ruled off topic but pretty much any ARM embedded Linux board would, as would the MIPS based router chips.
in that form factor, no, because there is no standard That’s why people make adapter boards
I’ll stay away from mpcie 
with a raspberry pi (with some in memory filesystems to spare the sd card)
Hardly a good choice - you’re still at the mercy of an unknown flash translation layer. The pi is a consumer toy, it was never engineered to be an embedded system. The SoC could be used in one, but the pi foundation can’t be bothered to bring out the necessary strapping pins to use alternate storage technology, because they see their mission as building a consumer toy, not an embedded board for serious usage.
They made that in the form of the compute module which is targeted at exactly that market. Available with eMMC.
Hi there, I can see that you are using 2245 with rasp pi 3 model b+, is it work nice? are you satisfied with this product? Thank you in advance
Hi @Ivan992 @Borroz is no longer active on the forum so to avoid you getting frustrated waiting I guess we need to open up your question to others with experience and willing to coment…Anyone?
Hello Jeff, thank you for understanding me, I really have problem buying some development kit to build lora wan network, mostly people recommend me already assambled gateways or some arduino based, but I need Raspberry Pi 3 model b or b+ with some, the hard part is to choose concentrator board, a guy cslorabox told me advantages and disadvantages for 2245 RAK Pi HAT and recommended me two other chip’s but as I lack some knoledge about that topic it is really hard to to choose right affordable concentrator board. Thank you in advance.