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AOM-DB3500 M.2 B Key——4G/5G

Contents​

  • 1AOM-3821 supports three PCIE ports.
  • 2M.2_B Key Pin define
  • 3J10 M.2_B Power Setting
  • 44G/5G
  • 5M.2_B-KEY PCIE TEST Preparation:

AOM-3821 supports three PCIE ports.​

Using the PCIE disk (SQF-C8BV2-128G-EDE) to test the M.2_B-Key PCIE interface. Using the WIFI module (EWM-W179M201E) to test the M.2_E-Key PCIE interface. Using NVMe (UGREEN KB-SA0093-A1 + JZ-SSD256G-5) to test PCIEX4 interface.

M.2_B Key Pin define​

M.2_B  M.2_B Connector Pin Definition
Pin
1
2
3
4
5
6
7
8
9
10
11
12-19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75

J10 M.2_B Power Setting​

PinFunction
J10（1-2）M.2_B power 3.3V (Default)
J10（2-3）M.2_B power 3.8V

4G/5G​

AOM-3821 supports EM05CNFD-128-SGAS and RM520NGLAA.

USB3.0-RM520N-GL USB2.0-EM05CNFD

STEP 1: Power on the device, Click network connection icon then choose "New Mobile Broadband connection".

then you will see the following window, click "Next" button to the next step.

STEP 2 : Choose Provider's country or region of the SIM card you insert in STEP 0.

STEP 3 : Choose or Set the Provider's name.

STEP 4 : Choose or Set APN.

STEP 5 : Confirm your configuration and finish.

After connection, 4Gwill create a net point “wwan0”

# ping –I wwan0 www.advantech.com

M.2_B-KEY PCIE TEST Preparation:​

  • List disk information
# fdisk -l /dev/nvme0n1
Disk /dev/nvme0n1: 119.24 GiB, 128035676160 bytes, 250069680 sectors 
Disk model: SQF-C3AV1-128GDEDE
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x217a69bc

Device         Boot Start  End   Sectors   Size Id Type
/dev/nvme0n1p1 2048    250069679 250067632 119.2G 83 Linux

  • Check mount point
# mount | grep nvme
/dev/nvme0n1p1 on /run/media/nvme0n1p1 type ext4 (rw,relatime)

  • Speed Test

– Read Speed

# echo 3 > /proc/sys/vm/drop_caches
# dd if=/dev/nvme0n1 of=/dev/zero bs=1M count=400
400+0 records in
400+0 records out
419430400 bytes (419 MB, 400 MiB) copied, 0.728982 s, 575 MB/s

– Write Speed

# echo 3 > /proc/sys/vm/drop_caches
# dd if=/dev/zero of=/dev/nvme0n1 bs=1M count=400
400+0 records in
400+0 records out
419430400 bytes (419 MB, 400 MiB) copied, 0.915896 s, 458 MB/s