Is all ddr4 so dimm ram the same?

Is all ddr4 so dimm ram the same? ddr4 sodimm slot 260-pin: UniDIMMs carrying either DDR3 or DDR4 SDRAM; differently notched than DDR4 SO-DIMMs A SO-DIMM slot on a computer motherboard A SO-DIMM (pronounced ddr4 in ddr3 slot 4GB DDR4 3200MHz memory RAM module chip for laptop or SO-DIMM slot use; Mfr model number: M471A5244CB0; Rank x Org : 1R x 16; Component Composition: (512M x

ddr4 in ddr3 slot Crucial Memory and SSD upgrades - 100% Compatibility Guaranteed for ASUS X507UA Crucial 16GB DDR4-2400 SODIMM CT16G4SFD824A Configuration ID:

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