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Leopard (VL-EPM-35)

Leopard  (VL-EPM-35)PC/104-Plus embedded computer with Intel Core 2 Duo processor

PC/104-Plus embedded computer with Intel Core 2 Duo processor

Very high-performance 2.26 GHz (commercial temp.) Intel Core 2 Duo processor with up to 4 GB RAM, dual gigabit Ethernet, MiniBlade flash socket, eUSB flash interface, and SPX expansion.

End of Life

The Leopard has reached the end of its lifecycle and is subject to very limited availability. Contact VersaLogic for current availability information.

For existing designs, VersaLogic recommends migration to the following product(s):

  • Liger (VL-EPM-43) High-performance single board computer (SBC) which combines Intel’s 7th generation Core “Kaby Lake” processor, with a PC/104-Plus expansion interface
  • BayCat (VL-EPM-31) PC/104-Plus platform with a low power 4th gen. Intel Atom E3845 (quad core), E3826 (dual core) or E3815 (single core) CPU. Up to 8 GB RAM, dual GbE, USB 3.0 and USB 2.0 ports, SATA, digital I/O, I2C, PWM, Mini PCIe/mSATA Socket, and SPI/SPX expansion.

For complete product lifecycle information, the Product Lifecycle chart is available by request.


  • PC/104-Plus Form Factor
    Industry standard expandable, compact, highly rugged format.
  • Intel® Core™2 Duo Processor
    Up to 2.26 GHz performance.
  • High-performance Video
    3D video acceleration (Gen 5.0). Analog and LVDS flat panel outputs.
  • Network Support
    Dual gigabit Ethernet with remote boot support.
  • System RAM
    Up to 4 GB DDR3 RAM for system flexibility.
  • USB I/O
    Six USB 2.0 ports support keyboard, mouse, and other devices.
  • Device I/O
    Five serial ports, dual SATA interface, and HD audio.
  • Flash Memory
    MiniBlade™ socket and eUSB interface for high-reliability flash storage.
  • Extended Temperature Version
    -40° to +85°C operation for harsh environments.
  • MIL-STD-202G
    Qualified for high shock/vibration environments.
  • SPX™ Expansion
    Supports expansion with versatile SPX add-on I/O modules.

OS Compatibility: 10 Windows/8/7/XP, Windows Embedded Std. 7/XPe/CE, Linux, VxWorks, QNX, DOS

Embedded PC/104+ ModuleRoHS-compliant



The Leopard is an embedded computer featuring an Intel 2nd generation Core 2 Duo processor. Based on the PC/104-Plus industry standard form factor, the Leopard supports PCI and ISA stackable expansion buses on a 4.21” by 3.78” footprint. With its combination of ultra-high performance (up to 2.26 GHz), mid-range power consumption (21.3W typ.), ruggedness, and compact size, the Leopard is an ideal embedded computer solution for medical, security, defense, transportation, and industrial markets. Potential applications include flight navigation, guidance systems, and evolving applications that rely on fast on-board processing of large amounts of data.

Like all VersaLogic products, the Leopard is designed to support OEM applications where high reliability and long-term availability are required. From application design-in support, to its 5+ year production life guarantee, the Leopard supports serious embedded applications. The Leopard is fully RoHS compliant. Customization is available, even in low OEM quantities.


Driven by a 2nd generation Intel Core 2 Duo processor designed specifically for embedded applications, the Leopard runs up to 2.26 GHz. Enhanced Intel SpeedStep® technology provides dynamic processor frequency scaling to meet instantaneous performance needs while minimizing power draw and heat dissipation. This allows users to fine-tune the balance of power conservation and performance to suit their application needs.

Intel’s GS45 + ICH9M chipset offers graphics core speeds up to 533 MHz for high-end graphics, advanced 3D rendering, high-definition video playback, and media acceleration for video CODECs. Analog VGA and LVDS flat panel video interfaces support flexible display configurations including Extended Desktop, Clone, and Twin display modes.

Leopard’s standard on-board features include dual gigabit Ethernet, an SO-DIMM socket for up to 4 GB DDR3 RAM, six USB 2.0 ports, five serial ports, dual SATA interface, LPT interface, HD audio, and a MiniBlade socket and eUSB interface for removable flash storage. VersaLogic’s SPX expansion interface creates additional access to cost-effective plug-in I/O solutions.

Available in both standard (0° to +60°C) and extended (-40° to +85°C) temperature versions; the Leopard meets MIL-STD-202G specifications for shock and vibration. The Leopard features transient voltage suppression (TVS) devices on many external connections for enhanced electrostatic discharge (ESD) protection in the field.

The Leopard includes an embedded BIOS with OEM enhancements from Phoenix Technologies. The field-reprogrammable BIOS supports custom defaults and the addition of firmbase applications for security processes, remote booting, and other pre-OS software functions. The Leopard is compatible with a variety of popular operating systems including Windows, Windows Embedded, Linux, VxWorks, and QNX.

VersaLogic products are designed for use by OEMs working in a variety of market applications: Aerospace, Defense, Energy, Industrial, Security, Medical, Military, Robotics, and Transportation. Anywhere that the need for superb quality and high-performance embedded computing exists, applications include: automation, avionics, gateway, in-vehicle, monitoring, simulation, and vision.

VersaLogic delivers extremely reliable standard and customized embedded computers backed with unsurpassed service and the highest availability in the market. VersaLogic exists to exceed customers' product, service, support and delivery needs - whenever and wherever the need arises.

Ordering Information

Model Processor Speed Power Operating Temp. Cooling Conformal Coating Digi-Key logo
VL-EPM-35S Intel Core 2 Duo 2.26 GHz 21.3W (typ.) 0° to +60°C Fan None
VL-EPM-35SR* Intel Core 2 Duo 2.26 GHz 21.3W (typ.) 0° to +60°C Fan Urethane
VL-EPM-35E Intel Core 2 Duo 1.2 GHz 15.5W (typ.) -40° to +85°C Fan None
VL-EPM-35ER* Intel Core 2 Duo 1.2 GHz 15.5W (typ.) -40° to +85°C Fan Urethane
* Special Order Product. Contact VersaLogic Sales for minimum order quantities and lead time.

Export Information

Description Value
SCHEDULE B:8471.60.7000


Part Number Description Photo
Cable Kit
VL-CKR-LEOPEPM-35 Leopard Eval. Cable Kit. Includes VL-CBR-8006, 0401, 0701, 0803 ,1008, 1201, 3406, and HDW-105 (x2).
VL-CBR-3406I/O cable set and paddleboard
VL-CBR-0401Power cable, ATX to SATA, 6.25"
VL-CBR-0701SATA cable, 19.75"
VL-CBR-0803Audio cable, Stereo in and out, 8-pin to 3.5 mm (x2), latching, 12"
VL-CBR-1008ATX power adapter cable, 10-pin . 12"
VL-CBR-1201VGA interface cable, 12-pin 2 mm (latching) / 15-pin VGA
VL-CBR-8006Primary I/O breakout for EPM-35 Leopard
VL-HDW-105Standoff package, 0.6", Metric thread
VL-CBR-1012RS232 cable, 10-pin to 2xDsub, 12"
VL-CBR-1401SPX module cable assembly, supports 2 modules, 14-pin, 6"
VL-CBR-1402SPX module cable assembly, supports 4 modules, 14-pin, 12"
VL-CBR-2010LVDS / flat panel interface cable,18-bit (Hirose), 20"
VL-CBR-2011LVDS / flat panel cable, 18-bit (JAE), 20"
VL-CBR-2012LVDS / flat panel cable, 24-bit (Hirose), 20"
VL-CBR-2014LVDS to VGA adapter board
VL-MM7-4EBNDRAM 4 GB, PC3-8500 SODIMM DDR3, industrial temperature
VL-MM7-4SBNDRAM 4 GB, PC3-8500 SODIMM DDR3, standard temperature
VL-MM7-2SCNDRAM 2 GB, PC3-8500 SODIMM DDR3, Class-3, standard temperature
VL-MM7-2EBNDRAM 2 GB, PC3-8500 SODIMM DDR3, industrial temperature
VL-MM7-2ECNDRAM 2 GB, PC3-8500 SODIMM DDR3, Class-3, industrial temperature
VL-MM7-1EBNDRAM 1 GB, PC3-8500 SODIMM DDR3, industrial temperature
VL-MM7-1ECNDRAM 1 GB, PC3-8500 SODIMM DDR3, Class-3, industrial temperature
VL-MM7-1SBNDRAM 1 GB, PC3-8500 SODIMM DDR3, standard temperature
VL-F15-8EBNSSD 8 GB, eUSB, industrial temperature
VL-F15-4EBNSSD 4 GB, eUSB, industrial temperature
VL-F15-2EBNSSD 2 GB, eUSB, industrial temperature
VL-ENCL-5CDevelopment enclosure
VL-HDW-106Standoff package, 0.6", English thread
VL-HDW-203PC/104 extractor tool (metal)

Expansion Modules

Part Number Description Form Factor
VL-SPX-3 CANbus Module, single-channel V2.0B, industrial temperatureSPX
Analog & Digital I/O
VL-SPX-1 Analog Input Module, x8 Channels, industrial temperatureSPX
VL-SPX-2 Digital I/O Module, x16 lines, industrial temperatureSPX
VL-SPX-4 Analog Output Module, x4 single channels 12-bit, industrial temperatureSPX
VL-SPX-5 Solid State Switch Module, x8 channels, industrial temperatureSPX
VL-EPM-V7E Video expansion module: VGA and LVDS, industrial temperaturePC/104-Plus
VL-EPM-P2E PC/104-Plus Mini PCIe socket x2 adapter, industrial temperaturePC/104-Plus
In-Stack Power Supply
VL-EPM-PS1a Power supply in-stack, industrial temperaturePC/104-Plus


General Board Size PC/104-Plus compliant (dual-board set): 107 mm x 96 mm (4.21" x 3.78")
Processor Intel Core 2 Duo (SP9300). Up to 1066 MHz FSB. 6 MB L2 cache. Temperature protected.
Chipset GS45 + ICH9M
Power Requirements +5V running Windows XP with 1 GB RAM, dual Ethernet, keyboard, and mouse:
Model Idle Typical Max
VL-EPM-35S 2.8A (14W) 4.3A (21.3W) 5.7A (28.5W)
VL-EPM-35SR 2.8A (14W) 4.3A (21.3W) 5.7A (28.5W)
VL-EPM-35E 2.3A (11.5W) 3.1A (15.5W) 3.9A (19.5W)
VL-EPM-35ER 2.3A (11.5W) 3.1A (15.5W) 3.9A (19.5W)
System Reset & Hardware Monitors Watchdog timeout. VCC sensing (resets below 4.7V typ.).
Stackable Bus PCI: 3.3V signaling, +5V tolerant
Other I/O Expansion VersaLogic SPX interface
RoHS Compliant
Environmental Operating Temperature
Model Operating Temperature
VL-EPM-35S 0° to +60°C
VL-EPM-35SR 0° to +60°C
VL-EPM-35E -40° to +85°C
VL-EPM-35ER -40° to +85°C
Storage Temperature -40° to +85°C
Airflow Requirements Free air from -40° to +85°C
Thermal Shock 5°C/min. over operating temperature
Humidity Less than 95%, noncondensing
Vibration, Sinusoidal Sweep MIL-STD-202G, Method 204, Modified Condition A: 2g constant acceleration from 5 to 500 Hz, 20 minutes per axis
Vibration, Random MIL-STD-202G, Method 214A, Condition A: 5.35g rms, 5 minutes per axis
Mechanical Shock MIL-STD-202G, Method 213B, Condition G: 20g half-sine, 11 ms duration per axis
Memory System RAM One SO-DIMM socket. Up to 4 GB DDR3 SDRAM.
Video General Integrated high-performance video. Intel GMA 4500 MHD graphics core. Analog and flat panel video interfaces support Extended Desktop, Clone, and Twin display modes. Optional video adapter card converts LVDS output to VGA for dual VGA operation.
VRAM Up to 512 MB shared DRAM
Desktop Display Interface* Standard analog output (VGA)
OEM Flat Panel Interface 18/24-bit LVDS interface. CMOS-selectable TFT panel types.
Mass Storage Hard Drive Dual SATA interface (Revision 2.0)
Flash One MiniBlade socket (USB signaling). One eUSB interface (USB signaling).
Network Interface Ethernet* Dual autodetect 10BaseT/100BaseTX/1000BaseT ports
Network Boot Option Intel boot agent (downloadable) supports PXE protocol. Argon Managed Boot Agent (optional with royalty fee) supports PXE, RPL, NetWare, TCP/IP (DHCP, BOOTP) remote boot protocols.
Device I/O USB*‡ Six USB 2.0/1.1 ports
COM 1 Interface* RS-232. 16C550 compatible. 115 Kbps.
COM 2 / 3 / 4 / 5 Interface* RS-232/422/485 selectable. 16C550 compatible. 460 Kbps.
LPT Interface SPP/EPP/ECP compatible
Audio‡ Digital HD audio in/out
Other PS/2 keyboard and mouse
Software BIOS Phoenix Technologies Embedded BIOS with OEM enhancements. Field reprogrammable. Support for USB keyboard/mouse and USB boot. User-configurable CMOS defaults.
Operating Systems Compatible with most x86 operating systems, including Windows, Windows Embedded, Linux, VxWorks, and QNX
* TVS protected port (enhanced ESD protection)
‡ Power pins on this port are overload protected
Data represents standard operation at +25°C with +5V supply unless otherwise noted. Specifications are subject to change without notification. Intel, Intel Core, and SpeedStep are trademarks of Intel Corp. MiniBlade is a trademark of the SFF-SIG. SPX is a trademark of VersaLogic Corp. All other trademarks are the property of their respective owners.