Overview
The Dell CU395 E139765 motherboard (CN-0TY915-70821-77C-D2NB) is a legacy circuit board designed for Dell OptiPlex 320 mini-tower systems. This LGA775-based platform provides robust connectivity and is engineered to support a range of Intel processors. The board includes essential I/O connectivity including Ethernet (RJ-45) for network integration, making it suitable for system rebuilds, lab environments, or legacy equipment maintenance.
Key Features
- LGA775 Socket: Supports Intel Pentium 4 and Core 2 processors with Hyper-Threading Technology capability
- Network Connectivity: Integrated Ethernet (RJ-45) port for reliable network communication
- Mini-Tower Form Factor: Optimized for Dell OptiPlex 320 compact desktop enclosures
- Standard I/O Configuration: Front panel headers, battery socket, and rear I/O connectivity
- Tested & Functional: Verified working condition, pulled from operational systems
Technical Specifications
- CPU Socket: LGA775 (Socket 775)
- Supported Processors: Intel Pentium 4, Core 2 Duo, Pentium D
- Form Factor: Mini-Tower Motherboard
- I/O Ports: Ethernet RJ-45, USB, Audio connectors
- Battery: 3V CMOS battery socket
- Front Panel Header: Standard 10-pin connector for case controls
- Board Revision: Various (see product variants)
- Compatibility: Dell OptiPlex 320 systems
Typical Applications
- Legacy desktop system repairs and component replacement
- Refurbishment and recertification of OptiPlex 320 units
- Spare parts inventory for corporate PC maintenance departments
- Laboratory and test environments requiring compatible hardware
- System integrators sourcing used components for budget-conscious builds
Compatibility & Replacements
Compatible With
- Dell OptiPlex 320 Mini-Tower desktop systems
- Intel LGA775 processors (Pentium 4, Core 2 Duo, Pentium D)
- Standard DDR2 SDRAM memory modules
- Dell OptiPlex 320 power supplies and case assemblies
Replaces / Drop-In Replacement For
- Dell CU395 (alternative part designation)
- Dell TY915 (alternative board designation)
- Dell MH651 (alternative model number)
- Dell UP453 (alternative reference number)
Works With
- Windows XP, Windows Vista, Windows 7 (original supported OS)
- Standard BIOS/UEFI firmware for Dell OptiPlex 320
- Dell DRAC and iDRAC management tools (where applicable)
- Legacy system monitoring and diagnostic utilities






