Asus ROG RAMPAGE VI EXTREME Manual page 33

3. DIMM LED (DIMM_A_LED; DIMM_B_LED; DIMM_C_LED; DIMM_D_LED)
The DIMM LED indicates when the corresponding memory channel is enabled.
4. Hard Disk LED (HD_LED)
The Hard Disk LED is designed to indicate the hard disk activity. It blinks when data
is being written into or read from the hard disk drive. The LED does not light up when
there is no hard disk drive connected to the motherboard or when the hard disk drive
does not function.
ROG RAMPAGE VI EXTREME
1-17