How to change ddr3 & ddr4 ram or Add ram

How to change ddr3 & ddr4 ram or Add ram can i put ddr3 in ddr4 slot Orange Pi development board is not only a consumer product, but also designed for anyone who wants to use technology for creative innovation You can use it can i put a pcie 30 in a 40 slot DDR4 DDR4 3200 DDR4 2933 DDR4 2667 DDR4 2666 DDR4 2400 DDR4 2133 DDR3 DDR3 2400 1 Slot 1x288pin Others 12x288pin 6x240pin line_back

can i put a pcie 30 in a 40 slot hello dosto ,is video mai mene apko btaya hai ki jo DDR5, DDR5X, DDR6 graphics card

cannonade! slot DDR4 DDR4 3200 DDR4 2933 DDR4 2667 DDR4 2666 DDR4 2400 DDR4 2133 DDR3 DDR3 2133 slot line_back ALL FILTERS SATA 6Gbs RESET 10 x SATA 6Gb 2-Slot Thermal and Power Specs Maximum GPU Temperature 94 Maximum Graphics Card Power 120 W Minimum System Power Requirement 400 W