Which two RAM slots to populate on a 4-slot system?

Which two RAM slots to populate on a 4-slot system? ram slot 1 and 3 or 2 and 4 so my task manager said 1 of 2 ram slots used, when i hover it saidslot 1: emptyslot 2: 4,0GB, 1600mhzbut it show 8gb of ram just finemy ram slot 3 and 4 not working Für eine Dual-Channel-RAM-Konfiguration spielt es keine Rolle, ob ihr Steckplätze 1+3 oder 2+4 verwendet Der allgemeine Konsens ist Slots 2 und 4 zu verwenden,

ram slot 3 and 4 not working RAM dimm slot next to the already populated one? d0rk June 26, 2021, 12:11am 3 Missing slot Pads but nothing soldered down Uploaded pic

ram slot 2 and 4 RAM and 50MP SONY IMX890 Camera LTE-FDD: Bands 1234578121718192026283266 LTE-TDD：Bands 3839 Look on mobo next to RAM slots, they should be numbered 0 & 1 or A0 A1 even if its 1 & 2, lowest number 1st 3 T level in digital production