If you have a drawer full of desktop DDR4, it will not fit. You must buy laptop RAM.
Here are the absolute top specifications you need to know. We have verified these against HP’s internal maintenance guides and real-world board inspections. hp 18e7 motherboard specs top
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series, including both the Tower (TWR) and Small Form Factor (SFF) models. It is built on the Intel H87 chipset If you have a drawer full of desktop DDR4, it will not fit
HP 18E7, motherboard specs, HP AIO motherboard, LGA 1150 H81, proprietary form factor. HP AIO motherboard