dmidecode --type memory
# dmidecode 3.1
Getting SMBIOS data from sysfs.
SMBIOS 3.0.0 present.

Handle 0x000E, DMI type 16, 23 bytes
Physical Memory Array
	Location: System Board Or Motherboard
	Use: System Memory
	Error Correction Type: Multi-bit ECC
	Maximum Capacity: 16 GB
	Error Information Handle: 0x000D
	Number Of Devices: 4

Handle 0x0015, DMI type 17, 40 bytes
Memory Device
	Array Handle: 0x000E
	Error Information Handle: 0x0014
	Total Width: 128 bits
	Data Width: 64 bits
	Size: 16384 MB
	Form Factor: DIMM
	Set: None
	Locator: DIMM 0
	Bank Locator: CHANNEL A
	Type: DDR4
	Type Detail: Synchronous Unbuffered (Unregistered)
	Speed: 2400 MT/s
	Manufacturer: Micron Technology
	Serial Number: 19E9CD37
	Asset Tag: Not Specified
	Part Number: 18ASF2G72AZ-2G3B1   
	Rank: 2
	Configured Clock Speed: 1200 MT/s
	Minimum Voltage: 1.2 V
	Maximum Voltage: 1.2 V
	Configured Voltage: 1.2 V

Handle 0x0018, DMI type 17, 40 bytes
Memory Device
	Array Handle: 0x000E
	Error Information Handle: 0x0017
	Total Width: 128 bits
	Data Width: 64 bits
	Size: 16384 MB
	Form Factor: DIMM
	Set: None
	Locator: DIMM 1
	Bank Locator: CHANNEL A
	Type: DDR4
	Type Detail: Synchronous Unbuffered (Unregistered)
	Speed: 2400 MT/s
	Manufacturer: Micron Technology
	Serial Number: 193F208B
	Asset Tag: Not Specified
	Part Number: 18ASF2G72AZ-2G3B1   
	Rank: 2
	Configured Clock Speed: 1200 MT/s
	Minimum Voltage: 1.2 V
	Maximum Voltage: 1.2 V
	Configured Voltage: 1.2 V

Handle 0x001B, DMI type 17, 40 bytes
Memory Device
	Array Handle: 0x000E
	Error Information Handle: 0x001A
	Total Width: 128 bits
	Data Width: 64 bits
	Size: 16384 MB
	Form Factor: DIMM
	Set: None
	Locator: DIMM 0
	Bank Locator: CHANNEL B
	Type: DDR4
	Type Detail: Synchronous Unbuffered (Unregistered)
	Speed: 2400 MT/s
	Manufacturer: Micron Technology
	Serial Number: 1A03888C
	Asset Tag: Not Specified
	Part Number: 18ASF2G72AZ-2G3B1   
	Rank: 2
	Configured Clock Speed: 1200 MT/s
	Minimum Voltage: 1.2 V
	Maximum Voltage: 1.2 V
	Configured Voltage: 1.2 V

Handle 0x001E, DMI type 17, 40 bytes
Memory Device
	Array Handle: 0x000E
	Error Information Handle: 0x001D
	Total Width: 128 bits
	Data Width: 64 bits
	Size: 16384 MB
	Form Factor: DIMM
	Set: None
	Locator: DIMM 1
	Bank Locator: CHANNEL B
	Type: DDR4
	Type Detail: Synchronous Unbuffered (Unregistered)
	Speed: 2400 MT/s
	Manufacturer: Micron Technology
	Serial Number: 19E9CD33
	Asset Tag: Not Specified
	Part Number: 18ASF2G72AZ-2G3B1   
	Rank: 2
	Configured Clock Speed: 1200 MT/s
	Minimum Voltage: 1.2 V
	Maximum Voltage: 1.2 V
	Configured Voltage: 1.2 V