Fanless Rolling Stock Computer with Intel® Core™ 9th Gen. CPU

NEXCOM mobile system nROK 7251 accomplishes operational efficiency of public transportation and service. Based on the 9th generation Intel® Core™ processors i7-9700TE and waterproof IP65 rating, it provides an integrated solution incorporating high computing power, 4 port of independent PoE, wireless communication (3 x WWAN + 6 x SIM), and GNSS tracking support to record in-train activities, locations, high-quality videos, driving patterns, and diagnostics for trains achieving better measures for safety and management.

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  • Intel® Core™ 9th Gen. desktop, i7-9700TE, up to 4.3 GHz, 8 Core
  • 4 x Independent 10/100/1000 Mbps PoE 802.3af/at, total 60W
  • 2 x External SSD/HDD and 2 x mSATA for RAID 0, 1
  • IP65 rating for waterproof
  • 3 x WWAN module slot, each for 2 x external SIM socket
  • 3 x mini-PCIe slot and 2 x M.2 key B slot
  • CE/FCC/EN50155 class OT4 conformity
  • Wide voltage input 24~110 VDC with isolation
Amplicon Middle East-Nexcom-nROK 7251-WI-7C4IP

Support 9th/8th generation Intel® Core™ i7/i5/i3 LGA1151 socket
– Intel® Core™ i7-9700TE, TDP 35W
– Intel® Q370 platform controller hub


2-Channel 260-pin DDR4 SO-DMIM sockets up to 32GB/channel (64GB for two channels, non-ECC up to 2666 MHz), default 4GB + 4GB industrial grade memory

Video Output

Chipset Intel® UHD graphics 630
1 x Waterproof VGA up to 1920 x 1200 @ 60Hz


2 x 2.5” SATA 3.0 external SSD/HDD (compatible with 15mm height), RAID 0/1 supported
2 x mSATA 3.0 (BIOS selection, occupied mPCIe slot)


1 x Full size mini-PCIe socket (USB 2.0, PCIe 3.0/SATA 3.0 (BIOS selection))
1 x Full size mini-PCIe socket (USB 2.0, PCIe 3.0/SATA 3.0 (BIOS selection)), BOM optional full size mini-PCIe socket (USB 2.0) for LTE module with 2 x external SIM
1 x Full size mini-PCIe socket (USB 2.0) for LTE module, BOM optional M.2 3042 Key B socket (USB 2.0, USB 3.1 Gen2) for LTE/5G NR module with 2 x external SIM
1 x M.2 3042/3050/3052 Key B socket (USB 2.0, USB 3.1 Gen2) for LTE/5G NR module with 2 x external SIM
1 x M.2 3042/3050/3052 Key B socket (USB 2.0, USB 3.1 Gen2, PCIe 3.0 (BOM optional)) for LTE/5G NR modem with 2 x external SIM


GNSS and On Board Sensor

1 x Default U-blox NEO-M8N GNSS module for GPS/Gloness/QZSS/ Galileo/Beidou
Optional modules with dead reckoning available
G Sensor (3-axis, 10-bit resolution)


4 x Independent LAN, 10/100/1000 Mbps I210-IT GbE, PoE 802.3af/at, max. 60W
1 x LAN, 10/100/1000 Mbps I219 support iAMT and WOL


TPM 2.0: Infineon SLB9665TT2.0FW5.62 (BOM optional)

I/O Interface-Front

21 x LED indicators (including 4 x programmable LED)
6 x Externally accessible SIM card sockets (4 x WWAN + 8 x SIM, BOM optional) w/ cover
1 x Reset button
2 x 2.5” external SSD/HDD
12 x SMA antenna hole
3 x USB 3.1 Gen1 type A (5V/1A) w/ cover
1 x USB 3.1 Gen2 type A (5V/1A) w/ cover

I/O Interface-Rear

4 x M12 X-coded PoE 802.3af/at, max. 60W
1 x M12 X-coded LAN port, 10/100/1000 Mbps
1 x Waterproof DC input connector with ignition, male type
1 x M8 for 1 x Mic-in, 1 x Line-out
2 x Waterproof DB9 (COM1/COM2) for full RS232 (isolation)
1 x Waterproof DB9 (COM3) for full RS232/422/485 (isolation)
1 x M12 A-coded 10pin (DIO)
– 4 x DI and 4 x DO (isolation)
– Power in for DIO isolation, 9~36VDC
1 x M12 A-coded for 2 x USB 2.0
1 x VGA

Power Management

Power input 24~110 VDC w/ isolation
Reverse protection, OCP & UVP
Selectable boot-up & shut-down voltage for low power protection by software
Setting 8-level power on/off delay time by software
10~255 seconds WDT support, setup by software
SDK (Windows/Linux) including utility and sample code

Operating System

Windows 10/Linux


260 x 256 x 110 (W x D x H) (mm)




Operating temperatures

EN 50155, class OT4 (-40~70°C), 85°C for 10 minutes (w/ 35W TDP CPU, industrial SSD) with air flow

Storage temperatures


Relative humidity

90% (non-condensing)


2g@5~500 Hz (in operation, SSD)
– Operating: MIL-STD-810G, Method 514.6, Category 4, common carrier US highway truck vibration exposure
– Storage: MIL-STD-810G, Method 514.6, Category 24, minimum integrity test


Operating: MIL-STD-810G, Method 516.6, Procedure I, functional shock=40g
Non-operating: MIL-STD-810G, Method 516.6, Procedure V, crash hazard shock test=75g


FCC Class A
EN 50155: 2017
– Ambient temperature EN 50155, Class OT4 (-40~70°C), 85°C for 10 minutes
– Interruptions of voltage supply class S1, S2 (S2: 36~110VDC@70% load)
– Supply change over class C1, C2
– EMC EN 50121-1: 2017, EN 50121-3-2: 2016+A1: 2019
– Environment EN 60068-2-1, EN 60068-2-2, EN 60068-2-30
– Shock and vibration IEC 61373 Class B
– Protective coating class PC1 (PC2, by request)
EN 45545-2: 2013+A1:2015

Data Sheet

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