Do I have to buy the same brand of RAM as I have in my desktop now?

Hello guys,I've a Dell g15 5520, with only 8Gb ddr5 4800mhz RAM, so i've buyed an extra memory, a Kingston Fury impact with the same specs,

SLOT B: Kingston Fury Beast DDR5 6000MHz C36

ddr4 slot No, it won't Even though both types have 288 pins, DDR4 and DDR5 memory is electrically incompatible The two types have a different notch

ddr4 and ddr5 same slot The targeted memory speed is not guaranteed when DIMMs of different part numbers are connected within the same channel When mixed DIMMs