Why still pay attention to the LGA775 platform?
In industrial automation, machine vision, data acquisition, and communication infrastructure, many systems are built on Intel Core 2 Quad/Duo and PICMG 1.3 architectures, fully utilizing PCI Express expansion capabilities and stable chipset platforms. The comprehensive replacement of these systems not only involves high hardware costs, but also faces complex issues such as driver compatibility, software licensing, and system verification. ADLINK's NuPRO-E320 is a full-size PICMG 1.3 system motherboard (SHB) that supports Core 2 Quad/Duo and Celeron processors packaged in LGA775. It is equipped with Intel Q45+ICH10 chipset, providing DDR3 memory, PCIe x16 expansion, dual Gigabit Ethernet (with optional Ethernet ports), SATA 3Gb/s, and rich I/O interfaces. It is widely used in high-end industrial computing and server fields.
As the service life of equipment increases, engineers often face challenges such as CPU cooling failure, CMOS battery depletion, serial port mode configuration, driver loss, and watchdog misoperation. This article is based on the NuPRO-E320 user manual and provides a detailed practical guide for engineers who are still maintaining these systems, covering hardware installation, jumper settings, BIOS fine tuning, driver deployment, and watchdog programming.
Hardware architecture and core specifications
2.1 Processor and Chipset
CPU: LGA775 socket, supports Intel Core 2 Quad (Yorkfield), Core 2 Duo (Wolfdale/Conroe), and Celeron 400 series, Front Bus (FSB) 800/1066/1333 MHz, with a maximum clock frequency of 3.0 GHz.
Chipset: Intel Q45 GMCH (integrated GMA 4500 graphics card)+ICH10 I/O controller.
Memory: 2 240 pin DIMM slots, supporting DDR3 800/1066 MHz, with a maximum capacity of 4GB (non ECC, no buffering). The dual channel configuration requires two channels to have the same capacity.
2.2 Onboard peripherals and I/O
Display: Integrated Intel GMA 4500, supports DirectX 10, Shader Model 4.0, VGA D-sub output, maximum resolution 2048 × 1536@75Hz Meanwhile, SDVO dual output is provided through PCIe x16.
Ethernet: Dual Intel 82574L GbE (NuPRO-E320LV only has a single Ethernet port), supporting both PCIe and LAN1 WOL.
Storage: 4 SATA 3Gb/s ports (2 onboard, 2 through backplane), 1 IDE channel (only supports 1 device), 1 FDD interface.
USB: There are a total of 9 USB 2.0 ports (1 rear panel, 4 onboard pins, 4 via backplane) with overcurrent protection.
Serial port: 2 COM ports (CN6 is COM2 RS-232, CN7 is COM1 adjustable RS-232/422/485/485+, switched through jumper JP1~JP4).
Parallel port: 1 SPP/EPP/ECP parallel port.
PS/2: Keyboard and mouse share Mini DIN 6-pin (separated by Y-line).
TPM: NuPRO-E320DV can be optionally equipped with Infineon SLB 9635 TT 1.2 security chip.
Hardware monitoring: Monitor CPU/system temperature, fan speed, various voltages (+12V,+5V,+3.3V, Vcore, etc.).
Watchdog: Programmable for 1~255 seconds or 1~255 minutes, timeout will result in system reset.
Expansion: Provides PCIe x16, PCIe x4, and 32bit/33MHz PCI buses through Gold Finger, compliant with PICMG 1.3 standard.
2.3 Physics and Environment
Size: 338 mm x 122 mm (full-size PICMG 1.3).
Working temperature: 0 ℃~60 ℃, storage -20 ℃~80 ℃, humidity 5%~90%, no condensation.
Power consumption: Core 2 Quad Q9400 at full load is about 88.9W, Core 2 Duo E8400 at full load is about 76.1W, Celeron 440 at full load is about 39.7W (see section 1.4 of the manual for measured data).

Installation and jumper configuration
3.1 CPU Installation (LGA775)
NuPRO-E320 adopts surface mount LGA775 socket (Socket T), installation steps:
Press down the load rod and detach it from the fixed buckle, then rotate the load rod to 135 °.
Flip the load board upwards to 100 ° and remove the protective cover with your thumb.
Aim the CPU at the foolproof notch of the socket (the golden triangle is located in the bottom left corner), and place it vertically and gently on the socket (do not push hard).
Close the load plate, press back the load rod, and secure it in the fixed buckle.
Attention: The CPU only has one correct direction, forcibly inserting it will damage the socket contacts. Be sure to operate in a power-off state.
3.2 Selection of CPU Heat Sink
The manual recommends three cooling solutions (depending on the height of the chassis):
1U level (32-20065-0000): Copper base+copper fins, fan 5500 RPM, air volume 10.48 CFM, noise 51 dBA.
3U level (32-20058-0000+34-30381-0000): Aluminum extrusion, fan 4500 RPM, air volume 57.7 CFM, noise 47.5 dBA.
Copper core reinforced type (32-20086-0000): Aluminum extrusion+copper core, fan 4500 RPM, air volume 76.9 CFM, noise 49 dBA.
Apply thermal grease evenly on the top surface of the CPU during installation, fix the heat sink, and connect the fan cable to FAN1 (4-pin, supports PWM speed regulation).
3.3 Memory Installation
Supports DDR3 800/1066 non ECC DIMMs, with a maximum of 2GB per unit (total 4GB). The dual channel mode requires DIMM1=DIMM2 to have the same capacity. Align with the foolproof notch during installation and insert vertically until the two side buckles are locked.