[BPI-R3] lte/4g card suggestion


As R3 only supports usb on mpcie connector i search for an mpcie lte card which uses only usb and support german/europe lte frequencies.

My favorite provider uses these bands:

  • LTE Band 3 (1,8 GHz)
  • LTE Band 1 (2,1 GHz)
  • LTE Band 7 (2,6 GHz)
  • LTE Band 8 (900 MHz)
  • LTE Band 20 (800 MHz)

Maybe change mpcie socket to ngff key e as only 3g/4g cards are supported by usb-limitation or bring 1 pcie lane from m2 sata slot to mpcie if possible to support pcie based cards too?

we use 4G main use mpcie interface.5G use m2 key b interface。and m2 key e also use with wifi module

Pcie can only be used together with 2 lanes , cannot separate 1 lanes.

5g imho needs pci+usb3,so only 4g cards will work in this slot

Do your 4g cards support the lte bands above? If yes which chip is it

quectel EC25 support.

Quectel_EC25_Mini_PCIe_LTE_Specification_V1.1.pdf (467.0 KB)

Quectel_EC25_LTE_Specification_V1.6.pdf (451.5 KB)

Thx have you tested this card?

i just ask because i don’t want to buy 50+€ and run into incompatibilities (see pin46/48 high voltage issue from r64) which will kill card on first try :slight_smile:

You could get the Quectel EC25-E LTE card ( THe “E” stands for Europe), or if you want a global one then the Quectel EC25-G (“G” for Global). Afaik all LTE cards use just the USB interface which is present in most mPCIe slots and the 3.3V.

Hi guys, just to confirm the R3 is compatible with the EC25 LTE and this has already been verified? I need to make sure because I will commit to marketing and brochure, documentation and I will tell customers. Please give me your 100% assurance.

I use a em7455 with a ngff key-b adapter in r3 and got lte-connection in mbim-mode working.

Ec25 was not available in stores in germany.

I have a Quectel EP06 on the way to test also.

It is LTE Cat 6 (300Mbps down) vs the EC25 LTE Cat 4 of 150Mbps down.

Looking at the HW interface document (https://www.quectel.com/product/lte-a-ep06-series) it appears that it only uses the USB interface of the mini PCIe form factor, so I think this would work well with the BPI-R3 interface.

I’ve only looked at the data interface so far (via the USB), so unsure if the PCM interface would be workable also. Voice usage isn’t something that I’d really need.

If the M.2 interface (PCIe signals) is available for use in someone else’s application, they could possibly use a higher LTE category module

It would have been ideal if a USB3 hub (like the USB5533B) was used instead of the USB2 hub… then USB3 could have been provided on the USB connector, as well as the mPCIe interface. Or perhaps a PCIe switch so that both the mPCIe and the M.2 interfaces could be used for PCIe signals.

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Did you succeed in testing EP06 ?

I haven’t actually looked at it that much. I’ve been keeping busy with other things. It does show up with the cdc-wdm0 USB device, so it seems promising. The LTE LED also appears to be lighting up (and flashing periodically dim/bright).

However because of the SNAPSHOT status of the firmware, and my not having worked with OpenWRT enough to really know how to juggle the kmod versions to get the QMI stuff onboarded.

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