LPC-681 – High Performance i7 Mini PC

High Performance with Triple 1080p HD Video Display & 4K Ultra HD Capabilities

  • Powerful 4th Gen Intel Core i7 Mobile Processor
  • Small Size; 6.54″(W) x 6.18″(D) x 1.89″(H)
  • Rugged Chassis with Mounting Bracket options
  • 4K Resolution, Ultra HD, Triple Display support
  • Up to 2TB Storage & 16GB of DDR3L Memory
  • Built-in USB 3.0, Gigabit LAN, Serial DB9/RS232, e-SATA, Video (DisplayPort, 2x HDMI), Audio, Optional 802.11 b/g/n Wireless
  • Remote Power Option
  • Solid State Hard Drives (SSD) Optional
  • UL Listed

The LPC-681 is now End-of-Life and has been Discontinued, please contact Stealth for more info.

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Our Most Powerful, Advanced Mini PC Ever!
The Stealth model LPC-681 is designed with the new high performance fourth generation Haswell Intel® Core i7 mobile processor technology. You will experience blazing speed performance that will handle your most processor intense applications in the smallest space ever. This tiny package measures a mere 6.5″ x 6.18″ x 1.89″ in size and yet can outperform a PC many times its size.

Feature Packed and Well Connected
The Stealth LPC-681 Mini PC is packed with features including DisplayPort & HDMI video connectors, USB 3.0, RS232, Gigabit LAN, e-SATA, audio in/out ports and much more. LPC-681 operates from an external 19 VDC power adapter (included) or can be connected to an external DC source of 12 to 20VDC making it ideal for mobile and in-vehicle applications.

The leader in Small Form Factor PCs is an ISO 9001 manufacturer with over two decades of delivering quality solutions and support all over the world. Our proven track record is reflected in our impressive customer list that includes fortune 500’s, governments, educational institutions, as well as small and midsize enterprises right down to sole proprietorships. Contact us today to discuss your application with one of our product specialists. Toll Free: 1-888-STEALTH (1-888-783-2584) or International 905-264-9000.


Supporting Intel® 4th Generation Core™ i7 Processors (Code name Haswell)
Offered with Intel's Core i7-4910MQ (up to 3.90 GHz)


Intel's QM87 Chipset


Dual-Channel memory architecture
Offers 2 x DDR3L SO-Dimm memory slots providing options up to 16GB of RAM

Internal Storage

128GB MLC SSD (Solid State Drive) standard (SATA)
Options of up to 1TB SSD internal storage.

Internal Expansion Option

2 Internal Mini-PCIe expansion options (1) full sized, (1 half size)


Onboard/Integrated Intel HD Graphics 4600 (built into the CPU)
Supports 4K Ultra HD Resolution as well as 1080p HD Video
Supports Extended Desktop or Clone modes
Triple Display support with DisplayPort and HDMI
Max Resolution, DisplayPort Mode: 3840×2160 @ 60Hz, HDMI Mode: 4096×2304 @ 24Hz or 2560×1600 @ 60Hz


Onboard integrated 10/100/1000 Intel Gigabit Ethernet, RJ45 connection (WGI217LM)
Optional Built in 802.11 ac/a/b/g/n Wireless Networking Card, Dual Band Support, 2.4Ghz / 5Ghz + Bluetooth via Mini-PCIe, Intel AC 7260


Realtek HD Audio Codec ALC269Q HD, 5.1 Channel

Operating Systems

Windows 7 (32 and 64-bit)
Windows 10 (64-bit)
Windows 8.1 (32 and 64-Bit)
Windows 8 (32 and 64-Bit)
Ubuntu Linux
Optional: QNX & embedded
Please contact us directly for any special requirements

Chassis Description

Low Profile Rugged Steel Chassis

Power Input

Rear DC power Jack ideal for mobile applications
Input is 12-20V DC +/-5% (90W Max)
Includes External AC Adapter, Input 100~240V AC @ 1.5A 50-60Hz

Power Management

ACPI compliant
Wake-on event

Included with System

100-240V AC Adapter
North American Power Cord
1 x DisplayPort to HDMI cable
1 x DisplayPort to VGA cable
* NOTE: Subject to change without notice


Optional HDMI to DVI Video Adapter
Optional 802.11 b/g/n/ac Dual Band (2.4Ghz / 5Ghz) Wireless Networking and Bluetooth, Intel® AC7260 via internal Mini-PCIe
Remote power option Ideal for OEM or Cabinet manufacturers

Rear Panel

1x RS232 COM port
1x Gigabit RJ45 Network connection
Optional 802.11 WiFi Antenna
Audio Line-Out Jack
Microphone Input Jack
2 x USB 3.0 Ports
2x HDMI video connectors
1x DisplayPort video connector
2x e-SATA ports (or 2x USB ports)
Kensington lock hole
DC Power Input Jack

Front Panel

2 x USB 2.0 Ports
Power-on button with LED
Hard Drive indication LED
Fan Warning indication LED


6.54"(W) x 6.18"(D) x 1.89"(H) (166 x 157.5 x 48 mm)


Operating Temperature: 0~50C (32~122F)
Storage Temperature: -30~60C (-22~140F)
Relative Humidity: 95% RH (45C non-Condensing)
Operating Vibration: 0.5Grms, Random, 10~500Hz, X,Y,Z 3Axes, 0.5hr/Axis
Operating Shock: 8G, Half sine, 11ms duration
MTBF: 50,000hrs


UL (Canada)


Unit 3.30 lbs / 1.50 KG
Power supply w/cord: 1.15 lbs / 0.52 KG
Shipping: 5 lbs / 2.3 KG


1 Year limited Warranty Standard
1 Year Extended Warranty available (see Configurator/Price List)


Note: Specifications are subject to change without notice.


LPC-681 - Dimensional Drawing with Mounting 356 downloads

LPC-681 - Dimensional Drawing with Mounting ...


Drivers for the LPC-681 Little PC Computer


Audio Driver - Windows 7, 8 and 8.1 (32-Bit) 325 downloads

LPC-681 Audio Driver - Windows 7, 8 and 8.1 (32-Bit) ...

Audio Driver - Windows 7, 8 and 8.1 (64-Bit) 312 downloads

LPC-681 Audio Driver - Windows 7, 8 and 8.1 (64-Bit) ...

Chipset Driver - Windows 7, 8, 8.1, Server 2008, 2008 R2, 2012 and 2012 R2 (32-Bit and 64-Bit) 264 downloads

LPC-681 Chipset driver for Windows 7, 8, 8.1, Server 2008, 2008 R2, 2012 and 2012 R2 (32-Bit and 64-Bit) ...

Intel Management Engine (ME) - Windows 7, 8 and 8.1 (32 and 64-Bit) 301 downloads

LPC-681 Intel Management Engine driver for Windows 7, 8 and 8.1 (32-Bit and 64-Bit) ...

Intel Storage Driver (RST) - Windows 7, 8, 8.1, Server 2008 R2, Server 2012, Server 2012 R2 (32-bit and 64-Bit) 251 downloads

LPC-681 Storage Driver for Windows 7, 8, 8.1, Server 2008 R2, Server 2012 and Server 2012 R2. This includes the AHCI driver. ...