- Intel Apollo Lake Celeron J3455 or Celeron N3350 Processors
- Embedded Long-life Series, Planned Lifecycle Through Q3'2031
- CPU Mounted on Bottom for Easy Integration into Fanless Systems
- Supports up to 3 Displays, 2 * HDMI 4K @30Hz, VGA
- 12V DC-In & 2 x LAN & Onboard TPM 2.0
- ECO-design for EuP/ErP

Model NameNU691
Part NumberJNU691-3455
Form FactorNUC (101 x 101mm)
ProcessorIntel® Celeron J3455 Processor Quad Core 1.50 GHz - 2.30 GHz, 10W TDP
Intel® Celeron N3350 Processor Dual Core 1.10 GHz - 2.40 GHz, 6W TDP
* Ships with CPU heatsink/fan for bench testing
Memory1 * 204-pin DDR3L-1866 up to 8GB total, 1.35V required
GraphicsIntel HD Graphics 500, 250MHz - 750MHz (J3455)
Intel HD Graphics 500, 200MHz - 650MHz (N3350)
AudioRealtek ALC662 HD Audio
Realtek ALC888 HD Audio (Manufacturered after March 2021)
LAN2 x Realtek RTL8111H Gigabit LAN
Storage1 x Full Size mSATA Slot
1 x SATA3 6Gb/s Connector
Super IOFINTEK F81803U
TPMIntel fTPM 2.0 (PTT) Trusted Computing Firmware
* As of 5/11/2020, onboard TPM is now optional
Form FactorNUC Form Factor (101mm X 101mm)
Back Panel Connectors
2 USB 3.0 ports
2 RJ-45 ports (10/100/1000)
2 HDMI 1.4b (3840 x 2160 @ 30Hz)
1 Line out / MIC in Combo Jack
1 12V DC-in jack

Front Panel Connectors
1 VGA (1920 x 1080 @ 60Hz)
2 USB 3.0
1 RS232/422/485 COM port

Onboard I/O Connectors
1 Full size mSATA Slot
1 Half size mini PCI-E Slot
1 SATA3 6Gb/s Connector
1 USB Pin Header (2.0 mm pitch) for up to 2 additional USB 2.0 Ports
1 SIM Card Holder
1 Chassis Intrusion Jumper
1 AT/ATX Mode Jumper
1 10-pin GPIO Header
1 5-pin SMBUS Header
1 3-pin Fan Connector
1 4-pin Front Panel Connector
1 4-pin Power-out Connector for 2.5" HDD (Mating plug: JST XHP-4)
1 2-pin +12V Power-out connector (Mating plug: JST VHR-2N or TE 1-1123722-2)
Power Supply for NU691
External Power Supply – the board can be powered with a +12V external power supply though a DC connector on the back panel. The rear +12V DC jack accepts plugs with an inner diameter (ID) of 2.5 mm and an outer diameter (OD) of 5.5 mm, where the inner contact is +12V (±5%) and the shell is GND.

Internal Power Supply – the board can be powered via the internal +12V 2-pin power connector, where pin 1 is +12V and pin 2 is GND. The internal 2-pin power connector accepts a JST VHR-2N or TE 1-1123722-2 plug from the power supply. Or use Jetway G01-PWDCJK-2P20-F DC-in cable for alternatively 12V AC adapter.
Market Segments Supported
√ Digital Security & Surveillance
√ Digital Signage
√ Gaming
√ Industrial Automation/Control
√ Medical
√ Retail (POS/Kiosk/ATM)
√ Networking/Storage Server/Mail Server/Print Server
√ Thin Client
Operating Temperature : 0 ~ 60°C
Storage Temperature : -20 ~ 85°C
Ordering Info
Part Number Description
JNU691-3455 Celeron J3455 NUC form factor motherboard with heatsink/fan
JNU691T2-3455 Celeron J3455 NUC form factor motherboard with heatsink/fan and hardware TPM 2.0
JNU691-3350 Celeron N3350 NUC form factor motherboard with heatsink/fan
G01-SATAL-RD30-F (Incl) L-type SATA cable
G01-XH4-SA15-30F (Incl) SATA power cable
OS Support List
Windows Linux
Windows 10 64bit Fedora 25.13
Win 10 IoT Enterprise 64-bit Ubuntu 16.10
CentOS 7
pfSense 2.3.2
NU691 BIOS A08 Release Date 2022-11-10
Description Update DRAM Compatibility.
Download  BATJUA08.zip
Flash Instructions for UEFI 1. Unzip the file and copy to the USB flash drive with FAT32 format.
2. Boot from the USB flash drive.
3. Type "fs0:" to change path when you see Shell prompt.
4. Type "BATJUA08" to auto update BIOS.
5. Power off the system after the update finished.
Revised History [A07]. Support Intel PTT (fTPM).
[A06]. 1.Support ALC888 Audio. 2.Add Beep Code on Boot.
[A05]. Update Microcode for F-1 Stepping CPU.
[A04]. 1.Update Microcode for INTEL SA-00233. 2.Add Turbo Mode Option.
[A03]. Improve DDR3L-1866 compatibility.
[A02]. Update Microcode and VBIOS.
[A01]. Initial BIOS.

· Please do not flash the BIOS UNLESS your system has a BIOS-related issue. Flashing the wrong BIOS can cause irreparable damage to the system.
· Please be aware that by flashing this BIOS you agree that in the event of a BIOS flash failure, you must contact your dealer for a BIOS replacement. There are no exceptions to this policy. Jetway does not have a policy of replacing BIOS chips directly with end users.

Drivers for NU691
  Windows 10 (64 bit)
Chipset  inf.zip
Graphic  gfx.zip
Sound  audio.zip
LAN  rtllan.zip
LAN Port Teaming  Realtek Teamingv2.0.3.0.zip
ISH  ish.zip
TXE  txe.zip
iRMT  iRMT.zip
Serial IO  SIO_Win10_64_1.3.zip
2.0  G03-NU691-F.pdf
Power Consumption Report  Reports available upon request
Temperature Test Report  Reports available upon request
Watchdog/GPIO sample code  Watchdog and GPIO sample code for Windows and Linux