The HP MS-7860 (Ver 1.2) is a micro-ATX motherboard commonly found in HP ProDesk 400 G1 and G2 series computers . Since HP does not typically release a standalone "motherboard manual" for these OEM boards, the primary technical resources are the system-wide guides for the ProDesk models they power . Core Specifications Chipset: Intel H81 Express .
Socket: LGA 1150 (Supports 4th Gen Intel Core i3/i5/i7, Pentium, and Celeron) .
Memory: 2x DDR3 slots (Up to 16GB total; supports 1333/1600 MHz) . Expansion: 1x PCIe x16 (3.0), 3x PCIe x1 .
Rear I/O: 4x USB 2.0, VGA, DVI-D, PS/2 ports, and Gigabit Ethernet .
Power: Standard 24-pin ATX and 4-pin CPU power connectors . Essential Manuals & Resources hp ms7860 ver 12 motherboard manual new
For detailed pinouts, hardware upgrades, or maintenance, refer to these official HP documents:
Maintenance and Service Guide (HP ProDesk 400 G1): Covers component removal, disassembly, and illustrated parts catalogs .
Hardware Reference Guide: Details front/rear panel components and standard configuration features .
Technical Schematic (Scribd): Provides deep technical layouts, including block diagrams and pin configurations . Front Panel & Power Pinouts The HP MS-7860 (Ver 1
If you are moving this board to a new case, note that HP often uses proprietary headers.
Unlike retail motherboards (e.g., ASUS or Gigabyte), the HP MS7860 is an OEM (Original Equipment Manufacturer) board. HP does not host these manuals on their public support page in an easy-to-find folder. Instead, the documentation is often buried inside service guides for specific pre-built models (like the HP Pavilion 550-114 or 500-214).
The "Ver 12" is critical. Earlier versions (Ver 1.0, Ver 2.1) had different front-panel pinouts and power configurations. Version 12 introduced support for 4th and 5th Gen Intel Core processors (LGA 1150), DDR3 memory enhancements, and revised USB 3.0 headers.
The MS7860 (VER: 1.2) is a proprietary motherboard designed specifically for HP's "Pro 4300" All-in-One chassis. It is not a standard ATX or Micro-ATX board; it uses a custom form factor designed to fit behind the display of the AiO unit. While there is no singular "user manual" sold with this board (as it comes pre-installed), technical service guides and datasheets are available. Why is the "HP MS7860 Ver 12" Manual So Hard to Find
Status of "New" Manual: There is no specific "new" edition of the manual released recently. The most current documentation remains the HP Compaq Pro 4300 AiO Maintenance and Service Guide, which contains the schematics, jumper settings, and component layout for the MS7860 board.
When people search for a new manual, they often mean the BIOS configuration manual. The MS7860 Ver 12 shipped with an American Megatrends Inc. (AMI) BIOS version 80.21.
What changed in the "new" BIOS versions (80.24 – 80.29)?
To access the BIOS: Press F10 repeatedly during boot. A "new" manual for BIOS settings would show you how to unlock advanced tabs (Ctrl + F1 on the main screen).