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The 887A motherboard is built on the mobile platform architecture, meaning it utilizes components typically found in laptops to manage heat and power consumption efficiently within a slim chassis.
| Parameter | Details | |-----------|---------| | Form Factor | Custom Micro-ATX (24.1 cm × 24.1 cm approx., with non-standard mounting holes) | | Socket | LGA 1151 (v2) | | Supported CPUs | Intel Core i3, i5, i7 (8th gen primarily; some revisions support 7th gen) | | Chipset | Intel H370 or B360 (OEM variant) | | Memory | 2 × DDR4 DIMM slots, up to 32 GB (2400/2666 MHz, dual channel) | | Expansion Slots | 1 × PCIe x16 (3.0), 1 × PCIe x1, 1 × PCIe x4 (open-ended) | | Storage | 4 × SATA 6Gb/s, 1 × M.2 2280 (PCIe x4/SATA) | | Rear I/O | 4 × USB 3.0, 2 × USB 2.0, 1 × HDMI, 1 × VGA, 1 × RJ45 (GbE), audio jacks, PS/2 combo | | Internal Headers | 2 × USB 2.0, 1 × USB 3.0, front panel audio, COM header, TPM header, 4-pin CPU fan, 3-pin chassis fan | | Power Connectors | 24-pin ATX (proprietary pinout), 4-pin CPU (proprietary 4-pin vs standard 4+4) |
Unlike many HP boards that use proprietary 6-pin or 12-pin power, the 887A uses a standard 24-pin ATX and 4-pin CPU power. This makes it easy to swap in a better power supply—critical for upgrading to a discrete graphics card. hp 887a motherboard
| CPU Model | Cores/Threads | TDP | Notes | |-----------|---------------|-----|-------| | Intel Core i7-9700K | 8/8 | 95W | Works but no overclocking | | Intel Core i7-8700 | 6/12 | 65W | Best value for multitasking | | Intel Core i5-8500 | 6/6 | 65W | Sweet spot for budget builds | | Intel Core i3-8100 | 4/4 | 65W | Entry level | | Intel Pentium Gold G5400 | 2/4 | 54W | For basic office tasks | | Intel Celeron G4900 | 2/2 | 54W | Minimal use |
Warning: Do NOT install 7th Gen (Kaby Lake) or 10th Gen CPUs. The LGA 1151 pinout changed between 7th and 8th Gen. While the socket is physically the same, the electrical configuration and BIOS support are not. The 887A motherboard is built on the mobile
Cause: BIOS is set to IGFX (integrated graphics) first. Fix: Connect to the onboard DisplayPort or VGA. Enter BIOS > Advanced > Video > Primary Video Adapter > Change from “Auto” to “PCIe.”
If you are looking to upgrade an older HP Pavilion desktop or repair a system that has stopped booting, you may have encountered the HP 887A motherboard. Often manufactured by industry giant Pegatron for HP, this motherboard was a staple in mid-range Pavilion desktop towers (such as the p6, p7, and HPE series) roughly between 2011 and 2013. Warning: Do NOT install 7th Gen (Kaby Lake)
While reliable for its time, the 887A has specific quirks regarding CPU support and power connectivity that users must understand before attempting repairs or upgrades. This guide covers the specs, common issues, and upgrade paths for this legacy board.
This is where the 887A shines. You get:
Tip: If you want to run Windows 11, you must enable UEFI boot and disable CSM. The 887A lacks a TPM 2.0 module on early revisions, but HP issued a firmware update that emulates fTPM via the Intel ME.