Motherboard Onboard SIM Card Slot - Support for Industrial Use
The motherboard also has four DIMM slots for DDR5 RAM chips, each slot supporting 48GB dual-channel units ... It’s an ATX motherboard with four DIMM slots that support dual-channel DDR5 RAM up to 192GB at 7800MHz (OC).
What is DIMM and SO-DIMM Slot?
DIMM (dual in-line memory module) slots are the place on your motherboard where the RAM goes.
02 - About Motherboard and its Types.ppt - SlideShare
You can find out the types of RAM slots on the motherboard first to know what types are available, which slots the motherboard supports, how many pins and choose the appropriate RAM when building a PC.