1.443 1s notebook has two memory slots, which support DDR3 1333MHZ memory. A single notebook can support 4G memory at most and 8g (4g * 2) at most.
Tips: If 4G or more memory is installed in a 32-bit operating system, all memory will not be fully utilized due to the limitation of the system's own memory mapping access. If you want to fully recognize 4GB or more of memory, it is recommended that you install and use a 64-bit operating system.
2. If you confirm that the original spare parts of the machine can't meet the existing work requirements and want to upgrade the spare parts-in order to ensure the compatible use of hardware, it is recommended that you try to contact HP Gold Service Center for consultation and add original spare parts.
You can check the contact information of HP Gold Service Center through the following official link:
/zh/support-drivers/e support/as CPPS . html
3. If you want to upgrade the spare parts yourself, it is recommended that you bring spare parts for field testing of the machine, which can be used normally before purchase, so as to avoid the machine not working normally due to incompatible hardware.
I hope the above reply can help you.