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nROK 7251-WI-7C4IP

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

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

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 integral 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.


Support 9th/8th generation Intel® Core™ i7/i5/i3 LGA1151 socket

- Intel® Core™ i7-9700TE, TDP 35W

ChipsetIntel® Q370 platform controller hub
Memory2-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 Onboard 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)

LAN and Power over Ethernet

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

SecurityTPM 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 & Software Support

Pwer 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


Dimensions260 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: -40°C~80°C

Relative humidity: 90% (non-condensing)

Vibration (random)

- 2g@5~500 Hz (in operation, SSD)

Vibration (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

Shock (SSD)

- 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

nROK 7251-WI-7C4IP (P/N: 10A00725100X0)

Intel® Core™ 9th Gen. i7-9700TE, 2 x 4 GB industrial grade memory, DC input 24V~110V w/ isolation, 1 x VGA, 1 x LAN, 4 x PoE 802.3af/at (total 60W), IP65


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