Banana BPI-R4 USB 3.0 -5G modem m.2 Slow Speeds (Issue)

[KFO (MJZ)]

Greetings All

This topic to find solution for speed issue modems m.2 ( USB 3 ) OpenWrt System (SnapShot)

Modem Quectel RM551E and other modems , USB mode … Where BPI-R4 using USB 3.2 support to 10GB/s

Note: Test Conducted on same location and same bands …Also conducted on different three systems (OpenWrt , ROOter & immortalWrt ) same issue with installed all packages

Where the speed : on OpenWrt Router Board Banana BPI-R4 is 350 MB/s

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Where the speed : on MCUZONE (Tybe C) Board is around 800 MB/s (not using OpenWrt system)

Please can we get your support to find solution ?

This case is mostly related to this one but not solved yet …

Low USB3 speed

I appreciate any solution that can help us to find away @dangowrt

[phentx]

You have to use PCIE.

[KFO (MJZ)]

Did you try RM521-F or RM520 on PCIE … As I know , people said it has same issue

The point here also when USB 3.0 or 3.1 or 3.2 can support a high speeds above 5GB/s …Why is limited speed on OpenWrt and other systems up to 400 or 350 mb/s on banana board BPI-R4

On other hand : When I tested same modems RM521 RM520 FM190 RM551 on M.2 type C i’m getting around 900mb/s or 800mb/s almost full speed of the tower (Type C board m.2 Mcuzone)

[hideyuki]

i’ve tested RM520GL on PCIE, The speedtest i get around 390mb/s - 420mb/s down in my case i used immortalwrt.

[KFO (MJZ)]

it can reach to max 450 or 400 as per test also can’t reach to full tower actual speed , (I tried Suncomm Router X65 I got speed around 800 mb/s…) ,

I approached to ImmortalWrt team their community on Telegram and ROOter team (Developer Mr.DairyMan) they know about this issue and not solved yet

[zuowei8]

if you think that the issue is related with Low USB3.0 speed, I think that you can verify it, plugin one U-Disk into the USB3.0 port. verify the speed that writing one big file.

[KFO (MJZ)]

I hope if you can explain the steps … our point on m.2 5G/4G slot on Banana BPI-R4 same time has USB 3.2 and PCIE