dmidecode查看硬件信息

dmidecode 用于查看和硬件相关的信息，可以查询到BIOS，系统，主板，处理器，内存，缓存等信息
常用的命令有：

dmidecode |  grep 'Product Name'             //查看服务器型号
dmidecode |  grep  'Serial Number'           //查看主板序列号
dmidecode  -s system-serial-number           //查看系统系列号
dmidecode  -t  memory                        //查看内存信息
dmidecode  -t  11                            //查看OEM信息
dmidecode   |  grep  -A16  "Memory  Device"  |  grep "Size" | sed 's/^[\t]*//'  //现有内存数量和内存大小
dmidecode   |  grep  ''Maximum Capacity"  | sed "s/^[\t]*//"        //最大支持内存容量  

wu@wu:pmon3.3$ sudo dmidecode
# dmidecode 3.1
Getting SMBIOS data from sysfs.
SMBIOS 2.7 present.
77 structures occupying 3491 bytes.
Table at 0x000EC380.
Handle 0xDA00, DMI type 218, 251 bytes
OEM-specific Type
	Header and Data:
		DA FB 00 DA B2 00 37 4F 1E 36 00 05 00 05 00 03
		00 06 00 06 00 05 00 0F 00 0F 00 00 00 11 00 11
		00 02 00 12 00 12 00 04 00 22 00 22 00 01 00 23
		00 23 00 00 00 28 00 28 00 00 00 29 00 29 00 01
		00 2A 00 2A 00 02 00 2B 00 2B 00 FF FF 2C 00 2C
		00 FF FF 2D 00 2D 00 02 00 2E 00 2E 00 00 00 40
		00 40 00 01 00 41 00 41 00 00 00 42 00 42 00 01
		00 43 00 43 00 00 00 55 00 55 00 00 00 5C 00 5C
		00 01 00 5D 00 5D 00 00 00 6D 00 6D 00 05 00 6E
		00 6E 00 01 00 90 00 90 00 01 00 91 00 91 00 00
		00 92 00 92 00 02 00 93 00 93 00 01 00 94 00 94
		00 00 00 9B 00 9B 00 01 00 9D 00 9D 00 01 00 9E
		00 9E 00 00 00 9F 00 9F 00 00 00 A0 00 A0 00 01
		00 A1 00 A1 00 00 00 A2 00 A2 00 02 00 A3 00 A3
		00 01 00 ED 00 ED 00 00 00 F0 00 F0 00 01 00 F5
		00 F5 00 04 00 FF FF FF FF 00 00
Handle 0xDA01, DMI type 218, 251 bytes
OEM-specific Type
	Header and Data:
		DA FB 01 DA B2 00 37 4F 1E 36 00 F6 00 F6 00 00
		00 09 01 09 01 00 00 17 01 17 01 00 00 18 01 18
		01 01 00 19 01 19 01 00 00 1A 01 1A 01 01 00 1B
		01 1B 01 00 00 1C 01 1C 01 01 00 2B 01 2B 01 01
		00 2C 01 2C 01 00 00 2D 01 2D 01 01 00 2E 01 2E
		01 00 00 35 01 35 01 FF 00 37 01 37 01 00 00 38
		01 38 01 01 00 40 01 40 01 00 00 41 01 41 01 01
		00 46 01 46 01 00 00 47 01 47 01 01 00 4A 01 4A
		01 00 00 4B 01 4B 01 01 00 4E 01 4E 01 00 00 4F
		01 4F 01 01 00 54 01 54 01 00 00 55 01 55 01 01
		00 68 01 68 01 00 00 69 01 69 01 01 00 75 01 75
		01 02 00 76 01 76 01 01 00 9B 01 9B 01 00 00 9C
		01 9C 01 01 00 D4 01 D4 01 00 00 D5 01 D5 01 01
		00 E0 01 E0 01 05 00 EA 01 EA 01 00 00 EB 01 EB
		01 01 00 2D 02 2D 02 01 00 2E 02 2E 02 00 00 31
		02 31 02 04 00 FF FF FF FF 00 00
Handle 0xDA02, DMI type 218, 251 bytes
OEM-specific Type
	Header and Data:
		DA FB 02 DA B2 00 37 4F 1E 36 00 32 02 32 02 02
		00 33 02 33 02 01 00 4B 02 4B 02 01 00 4C 02 4C
		02 00 00 5B 02 5B 02 00 00 5C 02 5C 02 01 00 62
		02 62 02 01 00 63 02 63 02 00 00 64 02 64 02 01
		00 65 02 65 02 00 00 66 02 66 02 01 00 67 02 67
		02 00 00 68 02 68 02 01 00 69 02 69 02 00 00 6C
		02 6C 02 01 00 6D 02 6D 02 00 00 6E 02 6E 02 00
		00 A3 02 A3 02 01 00 A4 02 A4 02 00 00 A7 02 A7
		02 01 00 A8 02 A8 02 00 00 BD 02 BD 02 01 00 BE
		02 BE 02 00 00 CD 02 CD 02 01 00 D8 02 D8 02 FF
		FF D9 02 D9 02 FF FF DA 02 DA 02 FF FF DB 02 DB
		02 FF FF DC 02 DC 02 FF FF DD 02 DD 02 FF FF DE
		02 DE 02 FF FF DF 02 DF 02 FF FF E3 02 E3 02 01
		00 E4 02 E4 02 00 00 E5 02 E5 02 01 00 FD 02 FD
		02 01 00 FE 02 FE 02 00 00 0F 03 0F 03 02 00 12
		03 12 03 03 00 FF FF FF FF 00 00
Handle 0xDA03, DMI type 218, 251 bytes
OEM-specific Type
	Header and Data:
		DA FB 03 DA B2 00 37 4F 1E 36 00 13 03 13 03 01
		00 14 03 14 03 00 00 15 03 15 03 01 00 16 03 16
		03 00 00 17 03 17 03 01 00 18 03 18 03 00 00 19
		03 19 03 01 00 1A 03 1A 03 00 00 1B 03 1B 03 01
		00 1C 03 1C 03 00 00 1D 03 1D 03 01 00 1E 03 1E
		03 00 00 1F 03 1F 03 01 00 20 03 20 03 00 00 25
		03 25 03 01 00 26 03 26 03 01 00 3A 03 3A 03 01
		00 3B 03 3B 03 00 00 4F 03 4F 03 01 00 57 03 57
		03 00 00 58 03 58 03 01 00 5B 03 5B 03 01 00 5C
		03 5C 03 00 00 5D 03 5D 03 01 00 5E 03 5E 03 00
		00 5F 03 5F 03 01 00 60 03 60 03 00 00 61 03 61
		03 01 00 62 03 62 03 00 00 6F 03 6F 03 FF FF 83
		03 83 03 07 00 C9 03 C9 03 01 00 CA 03 CA 03 00
		00 98 04 98 04 FF FF 3E 40 3E 40 00 00 3F 40 3F
		40 01 00 00 80 00 80 00 00 02 80 02 80 02 00 03
		80 03 80 03 00 FF FF FF FF 00 00
Handle 0xDA04, DMI type 218, 59 bytes
OEM-specific Type
	Header and Data:
		DA 3B 04 DA B2 00 37 4F 1E 36 00 0D 80 0D 80 00
		00 00 A0 00 A0 01 00 04 A0 04 A0 01 00 00 F0 00
		F0 55 00 02 F0 02 F0 03 00 05 F0 05 F0 7F 00 06
		F0 06 F0 00 00 FF FF FF FF 00 00
Handle 0x0000, DMI type 0, 24 bytes
BIOS Information
	Vendor: Dell Inc.
	Version: A15
	Release Date: 02/15/2017
	Address: 0xF0000
	Runtime Size: 64 kB
	ROM Size: 8192 kB
	Characteristics:
		PCI is supported
		PNP is supported
		BIOS is upgradeable
		BIOS shadowing is allowed
		Boot from CD is supported
		Selectable boot is supported
		BIOS ROM is socketed
		EDD is supported
		5.25"/1.2 MB floppy services are supported (int 13h)
		3.5"/720 kB floppy services are supported (int 13h)
		3.5"/2.88 MB floppy services are supported (int 13h)
		Print screen service is supported (int 5h)
		8042 keyboard services are supported (int 9h)
		Serial services are supported (int 14h)
		Printer services are supported (int 17h)
		ACPI is supported
		USB legacy is supported
		BIOS boot specification is supported
		Function key-initiated network boot is supported
		Targeted content distribution is supported
		UEFI is supported
	BIOS Revision: 65.15
Handle 0x0001, DMI type 1, 27 bytes
System Information
	Manufacturer: Dell Inc.
	Product Name: OptiPlex 3020
	Version: 00
	Serial Number: 7SYNN62
	UUID: 4C4C4544-0053-5910-804E-B7C04F4E3632
	Wake-up Type: Power Switch
	SKU Number: 0612
	Family: Not Specified

Handle 0x0002, DMI type 2, 15 bytes
Base Board Information
	Manufacturer: Dell Inc.
	Product Name: 0WMJ54
	Version: A01
	Serial Number: /7SYNN62/CN7016356M07I8/
	Asset Tag: Not Specified
	Features:
		Board is a hosting board
		Board is replaceable
	Location In Chassis: Not Specified
	Chassis Handle: 0x0003
	Type: Motherboard
	Contained Object Handles: 0

Handle 0x0003, DMI type 3, 22 bytes
Chassis Information
	Manufacturer: Dell Inc.
	Type: Space-saving
	Lock: Not Present
	Version: Not Specified
	Serial Number: 7SYNN62
	Asset Tag: Not Specified
	Boot-up State: Safe
	Power Supply State: Safe
	Thermal State: Safe
	Security Status: None
	OEM Information: 0x00000000
	Height: Unspecified
	Number Of Power Cords: 1
	Contained Elements: 0
	SKU Number: To be filled by O.E.M.

Handle 0x0033, DMI type 4, 42 bytes
Processor Information
	Socket Designation: SOCKET 0
	Type: Central Processor
	Family: Core i5
	Manufacturer: Intel
	ID: C3 06 03 00 FF FB EB BF
	Signature: Type 0, Family 6, Model 60, Stepping 3
	Flags:
		FPU (Floating-point unit on-chip)
		VME (Virtual mode extension)
		DE (Debugging extension)
		PSE (Page size extension)
		TSC (Time stamp counter)
		MSR (Model specific registers)
		PAE (Physical address extension)
		MCE (Machine check exception)
		CX8 (CMPXCHG8 instruction supported)
		APIC (On-chip APIC hardware supported)
		SEP (Fast system call)
		MTRR (Memory type range registers)
		PGE (Page global enable)
		MCA (Machine check architecture)
		CMOV (Conditional move instruction supported)
		PAT (Page attribute table)
		PSE-36 (36-bit page size extension)
		CLFSH (CLFLUSH instruction supported)
		DS (Debug store)
		ACPI (ACPI supported)
		MMX (MMX technology supported)
		FXSR (FXSAVE and FXSTOR instructions supported)
		SSE (Streaming SIMD extensions)
		SSE2 (Streaming SIMD extensions 2)
		SS (Self-snoop)
		HTT (Multi-threading)
		TM (Thermal monitor supported)
		PBE (Pending break enabled)
	Version: Intel(R) Core(TM) i5-4590 CPU @ 3.30GHz
	Voltage: 1.2 V
	External Clock: 100 MHz
	Max Speed: 3800 MHz
	Current Speed: 3300 MHz
	Status: Populated, Enabled
	Upgrade: Socket BGA1155
	L1 Cache Handle: 0x0034
	L2 Cache Handle: 0x0035
	L3 Cache Handle: 0x0036
	Serial Number: Not Specified
	Asset Tag: Fill By OEM
	Part Number: Fill By OEM
	Core Count: 4
	Core Enabled: 4
	Thread Count: 4
	Characteristics:
		64-bit capable

Handle 0x0034, DMI type 7, 19 bytes
Cache Information
	Socket Designation: CPU Internal L1
	Configuration: Enabled, Not Socketed, Level 1
	Operational Mode: Write Back
	Location: Internal
	Installed Size: 256 kB
	Maximum Size: 256 kB
	Supported SRAM Types:
		Unknown
	Installed SRAM Type: Unknown
	Speed: Unknown
	Error Correction Type: Single-bit ECC
	System Type: Other
	Associativity: 8-way Set-associative

Handle 0x0035, DMI type 7, 19 bytes
Cache Information
	Socket Designation: CPU Internal L2
	Configuration: Enabled, Not Socketed, Level 2
	Operational Mode: Write Back
	Location: Internal
	Installed Size: 1024 kB
	Maximum Size: 1024 kB
	Supported SRAM Types:
		Unknown
	Installed SRAM Type: Unknown
	Speed: Unknown
	Error Correction Type: Single-bit ECC
	System Type: Unified
	Associativity: 8-way Set-associative

Handle 0x0036, DMI type 7, 19 bytes
Cache Information
	Socket Designation: CPU Internal L3
	Configuration: Enabled, Not Socketed, Level 3
	Operational Mode: Write Back
	Location: Internal
	Installed Size: 6144 kB
	Maximum Size: 6144 kB
	Supported SRAM Types:
		Unknown
	Installed SRAM Type: Unknown
	Speed: Unknown
	Error Correction Type: Single-bit ECC
	System Type: Unified
	Associativity: 12-way Set-associative

Handle 0x0004, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: J2A1
	Internal Connector Type: None
	External Reference Designator: LAN
	External Connector Type: RJ-45
	Port Type: Network Port

Handle 0x0005, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: J2A1
	Internal Connector Type: None
	External Reference Designator: USB1
	External Connector Type: Access Bus (USB)
	Port Type: USB

Handle 0x0006, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: J2A1
	Internal Connector Type: None
	External Reference Designator: USB2
	External Connector Type: Access Bus (USB)
	Port Type: USB

Handle 0x0007, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: J5A1
	Internal Connector Type: None
	External Reference Designator: USB3
	External Connector Type: Access Bus (USB)
	Port Type: USB

Handle 0x0008, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: J5A1
	Internal Connector Type: None
	External Reference Designator: USB4
	External Connector Type: Access Bus (USB)
	Port Type: USB

Handle 0x0009, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: J5A1
	Internal Connector Type: None
	External Reference Designator: USB5
	External Connector Type: Access Bus (USB)
	Port Type: USB

Handle 0x000A, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: J5A1
	Internal Connector Type: None
	External Reference Designator: USB6
	External Connector Type: Access Bus (USB)
	Port Type: USB

Handle 0x000B, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: J7A1
	Internal Connector Type: None
	External Reference Designator: Audio Jack
	External Connector Type: Other
	Port Type: Audio Port

Handle 0x000C, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: J6A2B
	Internal Connector Type: None
	External Reference Designator: Video
	External Connector Type: DB-15 female
	Port Type: Video Port

Handle 0x000D, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: J1A1
	Internal Connector Type: None
	External Reference Designator: Mouse
	External Connector Type: PS/2
	Port Type: Mouse Port

Handle 0x000E, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: J1A1
	Internal Connector Type: None
	External Reference Designator: Keyboard
	External Connector Type: PS/2
	Port Type: Keyboard Port

Handle 0x000F, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: J6A2A
	Internal Connector Type: None
	External Reference Designator: COM A
	External Connector Type: DB-9 male
	Port Type: Serial Port 16550A Compatible

Handle 0x0010, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: J8A1
	Internal Connector Type: None
	External Reference Designator: USB7
	External Connector Type: Access Bus (USB)
	Port Type: USB

Handle 0x0011, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: J8A1
	Internal Connector Type: None
	External Reference Designator: USB8
	External Connector Type: Access Bus (USB)
	Port Type: USB

Handle 0x0012, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: J2A1
	Internal Connector Type: None
	External Reference Designator: Display Port1
	External Connector Type: Other
	Port Type: Video Port

Handle 0x0013, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: J2B3 - CPU FAN
	Internal Connector Type: Other
	External Reference Designator: Not Specified
	External Connector Type: None
	Port Type: Other

Handle 0x0014, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: J8J1 - SATA PORT0
	Internal Connector Type: Other
	External Reference Designator: Not Specified
	External Connector Type: None
	Port Type: Other

Handle 0x0015, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: J7J3 - SATA PORT1
	Internal Connector Type: Other
	External Reference Designator: Not Specified
	External Connector Type: None
	Port Type: Other

Handle 0x0016, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: J1D1 - INTRUDER
	Internal Connector Type: Other
	External Reference Designator: Not Specified
	External Connector Type: None
	Port Type: Other

Handle 0x0017, DMI type 8, 9 bytes
Port Connector Information
	Internal Reference Designator: J2D4 - SYSTEM FAN
	Internal Connector Type: Other
	External Reference Designator: Not Specified
	External Connector Type: None
	Port Type: Other

Handle 0x001A, DMI type 9, 17 bytes
System Slot Information
	Designation: J6B2X16
	Type: 32-bit PCI Express x1
	Current Usage: Available
	Length: Short
	ID: 1
	Characteristics:
		3.3 V is provided
		Opening is shared
		PME signal is supported
	Bus Address: 0000:00:01.0

Handle 0xDED2, DMI type 9, 17 bytes
System Slot Information
	Designation: J6B1X16
	Type: 32-bit PCI Express x16
	Current Usage: Available
	Length: Long
	ID: 2
	Characteristics:
		3.3 V is provided
		Opening is shared
		PME signal is supported
	Bus Address: 0000:00:1c.2

Handle 0x001B, DMI type 10, 6 bytes
On Board Device Information
	Type: Video
	Status: Enabled
	Description: "Intel HD Graphics"

Handle 0x001C, DMI type 10, 6 bytes
On Board Device Information
	Type: Ethernet
	Status: Enabled
	Description: "Realtek Gigabit Ethernet Controller"

Handle 0x001D, DMI type 10, 6 bytes
On Board Device Information
	Type: Sound
	Status: Enabled
	Description: "High Definition Audio Controller"

Handle 0x001E, DMI type 11, 5 bytes
OEM Strings
	String 1: Dell System
	String 2: 1[0612]
	String 3: 3[1.0]
	String 4: 12[www.dell.com]
	String 5: 14[1]
	String 6: 15[3]
	String 7:  

Handle 0x001F, DMI type 12, 5 bytes
System Configuration Options
	Option 1: To Be Filled By O.E.M.

Handle 0xDED7, DMI type 13, 22 bytes
BIOS Language Information
	Language Description Format: Long
	Installable Languages: 1
		en|US|iso8859-1
	Currently Installed Language: en|US|iso8859-1

Handle 0x0020, DMI type 15, 35 bytes
System Event Log
	Area Length: 4 bytes
	Header Start Offset: 0x0000
	Header Length: 2 bytes
	Data Start Offset: 0x0002
	Access Method: Indexed I/O, one 16-bit index port, one 8-bit data port
	Access Address: Index 0x046A, Data 0x046C
	Status: Invalid, Not Full
	Change Token: 0x00000000
	Header Format: No Header
	Supported Log Type Descriptors: 6
	Descriptor 1: End of log
	Data Format 1: OEM-specific
	Descriptor 2: End of log
	Data Format 2: OEM-specific
	Descriptor 3: End of log
	Data Format 3: OEM-specific
	Descriptor 4: End of log
	Data Format 4: OEM-specific
	Descriptor 5: End of log
	Data Format 5: OEM-specific
	Descriptor 6: End of log
	Data Format 6: OEM-specific

Handle 0x0037, DMI type 16, 23 bytes
Physical Memory Array
	Location: System Board Or Motherboard
	Use: System Memory
	Error Correction Type: None
	Maximum Capacity: 16 GB
	Error Information Handle: Not Provided
	Number Of Devices: 2

Handle 0x0038, DMI type 17, 34 bytes
Memory Device
	Array Handle: 0x0037
	Error Information Handle: Not Provided
	Total Width: 64 bits
	Data Width: 64 bits
	Size: 8192 MB
	Form Factor: DIMM
	Set: None
	Locator: DIMM1
	Bank Locator: Not Specified
	Type: DDR3
	Type Detail: Synchronous
	Speed: 1600 MT/s
	Manufacturer: Kingston
	Serial Number: 0660AA004096
	Asset Tag: 05164400
	Part Number: 99P5471-048.A00LF 
	Rank: 2
	Configured Clock Speed: 1600 MT/s

Handle 0x003A, DMI type 17, 34 bytes
Memory Device
	Array Handle: 0x0037
	Error Information Handle: Not Provided
	Total Width: 64 bits
	Data Width: 64 bits
	Size: 8192 MB
	Form Factor: DIMM
	Set: None
	Locator: DIMM2
	Bank Locator: Not Specified
	Type: DDR3
	Type Detail: Synchronous
	Speed: 1600 MT/s
	Manufacturer: Kingston
	Serial Number: 0540ED00308F
	Asset Tag: 05164400
	Part Number: 99P5471-048.A00LF 
	Rank: 2
	Configured Clock Speed: 1600 MT/s

Handle 0x003C, DMI type 19, 31 bytes
Memory Array Mapped Address
	Starting Address: 0x00000000000
	Ending Address: 0x003FFFFFFFF
	Range Size: 16 GB
	Physical Array Handle: 0x0037
	Partition Width: 2

Handle 0x0039, DMI type 20, 19 bytes
Memory Device Mapped Address
	Starting Address: 0x00000000000
	Ending Address: 0x001FFFFFFFF
	Range Size: 8 GB
	Physical Device Handle: 0x0038
	Memory Array Mapped Address Handle: 0x003C
	Partition Row Position: 1
	Interleave Position: 1
	Interleaved Data Depth: 1

Handle 0x003B, DMI type 20, 19 bytes
Memory Device Mapped Address
	Starting Address: 0x00200000000
	Ending Address: 0x003FFFFFFFF
	Range Size: 8 GB
	Physical Device Handle: 0x003A
	Memory Array Mapped Address Handle: 0x003C
	Partition Row Position: 1
	Interleave Position: 2
	Interleaved Data Depth: 1

Handle 0x0021, DMI type 24, 5 bytes
Hardware Security
	Power-On Password Status: Disabled
	Keyboard Password Status: Disabled
	Administrator Password Status: Disabled
	Front Panel Reset Status: Disabled

Handle 0x0022, DMI type 25, 9 bytes
	System Power Controls
	Next Scheduled Power-on: *-* 00:00:00

Handle 0x0025, DMI type 26, 22 bytes
Voltage Probe
	Description: LM78A
	Location: <OUT OF SPEC>
	Status: <OUT OF SPEC>
	Maximum Value: Unknown
	Minimum Value: Unknown
	Resolution: Unknown
	Tolerance: Unknown
	Accuracy: Unknown
	OEM-specific Information: 0x00000000
	Nominal Value: Unknown

Handle 0x1B00, DMI type 27, 15 bytes
Cooling Device
	Type: Chip Fan
	Status: Unknown
	OEM-specific Information: 0x0000DD00
	Nominal Speed: Unknown Or Non-rotating
	Description: CPU Cooling Fan                   

Handle 0x1B01, DMI type 27, 15 bytes
Cooling Device
	Temperature Probe Handle: 0x1C00
	Type: Cabinet Fan
	Status: Unknown
	OEM-specific Information: 0x00000000
	Nominal Speed: Unknown Or Non-rotating
	Description: Mother Board Cooling Fan          

Handle 0x1C00, DMI type 28, 22 bytes
Temperature Probe
	Description: Ambient Thermal Sensor            
	Location: Motherboard
	Status: Unknown
	Maximum Value: 127.0 deg C
	Minimum Value: -127.0 deg C
	Resolution: 1.000 deg C
	Tolerance: Unknown
	Accuracy: Unknown
	OEM-specific Information: 0x00000000
	Nominal Value: Unknown

Handle 0x0023, DMI type 32, 20 bytes
System Boot Information
	Status: No errors detected

Handle 0x0024, DMI type 34, 11 bytes
Management Device
	Description: LM78-1
	Type: LM78
	Address: 0x00000000
	Address Type: I/O Port

Handle 0x0026, DMI type 36, 16 bytes
Management Device Threshold Data
	Lower Non-critical Threshold: 1
	Upper Non-critical Threshold: 2
	Lower Critical Threshold: 3
	Upper Critical Threshold: 4
	Lower Non-recoverable Threshold: 5
	Upper Non-recoverable Threshold: 6

Handle 0x0028, DMI type 36, 16 bytes
Management Device Threshold Data
	Lower Non-critical Threshold: 1
	Upper Non-critical Threshold: 2
	Lower Critical Threshold: 3
	Upper Critical Threshold: 4
	Lower Non-recoverable Threshold: 5
	Upper Non-recoverable Threshold: 6

Handle 0x002A, DMI type 36, 16 bytes
Management Device Threshold Data
	Lower Non-critical Threshold: 1
	Upper Non-critical Threshold: 2
	Lower Critical Threshold: 3
	Upper Critical Threshold: 4
	Lower Non-recoverable Threshold: 5
	Upper Non-recoverable Threshold: 6

Handle 0x002C, DMI type 36, 16 bytes
Management Device Threshold Data
	Lower Non-critical Threshold: 1
	Upper Non-critical Threshold: 2,
	Lower Critical Threshold: 3
	Upper Critical Threshold: 4
	Lower Non-recoverable Threshold: 5
	Upper Non-recoverable Threshold: 6

Handle 0x002D, DMI type 41, 11 bytes
Onboard Device
	Reference Designation:  Onboard IGD
	Type: Video
	Status: Enabled
	Type Instance: 1
	Bus Address: 0000:00:02.0

Handle 0x002E, DMI type 41, 11 bytes
Onboard Device
	Reference Designation:  Onboard LAN
	Type: Ethernet
	Status: Enabled
	Type Instance: 1
	Bus Address: 0000:00:19.0

Handle 0x002F, DMI type 41, 11 bytes
Onboard Device
	Reference Designation:  Onboard 1394
	Type: Other
	Status: Enabled
	Type Instance: 1
	Bus Address: 0000:03:1c.2

Handle 0xDECD, DMI type 131, 64 bytes
OEM-specific Type
	Header and Data:
		83 40 CD DE 35 00 00 00 00 00 00 00 00 00 00 00
		F8 00 5C 8C 00 00 00 00 01 00 00 00 01 00 09 00
		F0 03 1E 00 00 00 00 00 C8 00 FF FF 00 00 00 00
		00 00 00 00 26 00 00 00 76 50 72 6F 00 00 00 00

Handle 0xDEC8, DMI type 136, 6 bytes
OEM-specific Type
	Header and Data:
		88 06 C8 DE 5A 5A

Handle 0xB100, DMI type 177, 12 bytes
OEM-specific Type
	Header and Data:
		B1 0C 00 B1 02 00 00 00 00 00 00 00

Handle 0xB200, DMI type 178, 76 bytes
OEM-specific Type
	Header and Data:
		B2 4C 00 B2 07 01 0C 00 08 01 0A 00 09 01 0B 00
		0A 01 12 00 3B 00 20 00 42 00 18 00 48 00 14 00
		50 00 13 00 10 00 FF 00 11 00 FF 00 12 00 FF 00
		13 00 FF 00 14 00 FF 00 1E 00 FF 00 1F 00 FF 00
		20 00 FF 00 21 00 FF 00 22 00 FF 00
	Strings:
		                                                

Handle 0xD000, DMI type 208, 16 bytes
OEM-specific Type
	Header and Data:
		D0 10 00 D0 02 05 FE 00 12 06 01 02 00 00 00 00
	Strings:
		20150721
		20150721

Handle 0xD200, DMI type 210, 12 bytes
OEM-specific Type
	Header and Data:
		D2 0C 00 D2 00 00 00 03 06 80 04 03

Handle 0xD800, DMI type 216, 9 bytes
OEM-specific Type
	Header and Data:
		D8 09 00 D8 01 02 01 10 01
	Strings:
		"Intel Corp."
		"1025"

Handle 0xD900, DMI type 217, 8 bytes
OEM-specific Type
	Header and Data:
		D9 08 00 D9 01 02 01 03
	Strings:
		US-101
		Proprietary

Handle 0xDC00, DMI type 220, 20 bytes
OEM-specific Type
	Header and Data:
		DC 14 00 DC 10 F0 00 00 00 00 00 00 00 00 00 00
		00 00 00 00

Handle 0xDD00, DMI type 221, 19 bytes
OEM-specific Type
	Header and Data:
		DD 13 00 DD 00 01 00 00 F5 00 00 00 00 00 00 00
		00 00 00

Handle 0xDD01, DMI type 221, 19 bytes
OEM-specific Type
	Header and Data:
		DD 13 01 DD 00 01 00 10 F5 00 00 00 00 00 00 00
		00 00 00

Handle 0xDE00, DMI type 222, 16 bytes
OEM-specific Type
	Header and Data:
		DE 10 00 DE 01 04 00 00 17 03 30 07 55 01 00 00

Handle 0x0032, DMI type 255, 8 bytes
OEM-specific Type
	Header and Data:
		FF 08 32 00 01 02 00 00
	Strings:
		dellDelldellDELL
		0612
		_SIDAvf90w7wKZiZ
		DELL

Handle 0xDEDC, DMI type 127, 4 bytes
End Of Table

wu@wu:pmon3.3$ sudo dmidecode --help
Usage: dmidecode [OPTIONS]
Options are:
 -d, --dev-mem FILE     Read memory from device FILE (default: /dev/mem)
 -h, --help             Display this help text and exit
 -q, --quiet            Less verbose output
 -s, --string KEYWORD   Only display the value of the given DMI string
 -t, --type TYPE        Only display the entries of given type
 -u, --dump             Do not decode the entries
     --dump-bin FILE    Dump the DMI data to a binary file
     --from-dump FILE   Read the DMI data from a binary file
     --no-sysfs         Do not attempt to read DMI data from sysfs files
     --oem-string N     Only display the value of the given OEM string
 -V, --version          Display the version and exit
wu@wu:pmon3.3$ sudo dmidecode -t system
# dmidecode 3.1
Getting SMBIOS data from sysfs.
SMBIOS 2.7 present.

Handle 0x0001, DMI type 1, 27 bytes
System Information
	Manufacturer: Dell Inc.
	Product Name: OptiPlex 3020
	Version: 00
	Serial Number: 7SYNN62
	UUID: 4C4C4544-0053-5910-804E-B7C04F4E3632
	Wake-up Type: Power Switch
	SKU Number: 0612
	Family: Not Specified

Handle 0x001F, DMI type 12, 5 bytes
System Configuration Options
	Option 1: To Be Filled By O.E.M.

Handle 0x0020, DMI type 15, 35 bytes
System Event Log
	Area Length: 4 bytes
	Header Start Offset: 0x0000
	Header Length: 2 bytes
	Data Start Offset: 0x0002
	Access Method: Indexed I/O, one 16-bit index port, one 8-bit data port
	Access Address: Index 0x046A, Data 0x046C
	Status: Invalid, Not Full
	Change Token: 0x00000000
	Header Format: No Header
	Supported Log Type Descriptors: 6
	Descriptor 1: End of log
	Data Format 1: OEM-specific
	Descriptor 2: End of log
	Data Format 2: OEM-specific
	Descriptor 3: End of log
	Data Format 3: OEM-specific
	Descriptor 4: End of log
	Data Format 4: OEM-specific
	Descriptor 5: End of log
	Data Format 5: OEM-specific
	Descriptor 6: End of log
	Data Format 6: OEM-specific

Handle 0x0023, DMI type 32, 20 bytes
System Boot Information
	Status: No errors detected