I have an HP Pavillion 15-au063nr with 12 Gb installed RAM (4gb in slot 1 and 8 Gb in slot2) - 2133 mhz 1.2v DDR4 SHARED SODIMMs. I wish to replace the 4GB memory with an 8GB stick. However I am finding the bus speed is 2400 mhz, and instead of SHARED I am finding SINGLE RANK.
1. Do I need to replace both slots to make it work or can I mix a SHARED with a SINGLE RANK chip set?
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