System Management BIOS (SMBIOS) Reference 6 Specification

1 1 Document Identifier: DSP0134 2 Date: 2018-04-26 3 Version: 4 System Management BIOS (SMBIOS) Reference 5 Specification 6 Supersedes: 7 Document Class: Normative 8 Document Status: Published 9 Document Language: en-US 10 11 System Management BIOS (SMBIOS) Reference Specification DSP0134 2 Published Version Copyright Notice 12 Copyright 2000, 2002, 2004 2016 Distributed Management Task Force, Inc. (DMTF). All rights 13 reserved. 14 DMTF is a not-for-profit association of industry members dedicated to promoting enterprise and systems 15 Management and interoperability.

2 Members and non-members may reproduce DMTF specifications and 16 documents, provided that correct attribution is given. As DMTF specifications may be revised from time to 17 time, the particular version and release date should always be noted. 18 Implementation of certain elements of this standard or proposed standard may be subject to third party 19 patent rights, including provisional patent rights (herein "patent rights"). DMTF makes no representations 20 to users of the standard as to the existence of such rights, and is not responsible to recognize, disclose, 21 or identify any or all such third party patent right, owners or claimants, nor for any incomplete or 22 inaccurate identification or disclosure of such rights, owners or claimants.

3 DMTF shall have no liability to 23 any party, in any manner or circumstance, under any legal theory whatsoever, for failure to recognize, 24 disclose, or identify any such third party patent rights, or for such party s reliance on the standard or 25 incorporation thereof in its product, protocols or testing procedures. DMTF shall have no liability to any 26 party implementing such standard, whether such implementation is foreseeable or not, nor to any patent 27 owner or claimant, and shall have no liability or responsibility for costs or losses incurred if a standard is 28 withdrawn or modified after publication, and shall be indemnified and held harmless by any party 29 implementing the standard from any and all claims of infringement by a patent owner for such 30 implementations.

4 31 For information about patents held by third-parties which have notified the DMTF that, in their opinion, 32 such patent may relate to or impact implementations of DMTF standards, visit 33 34 This document s normative language is English. Translation into other languages is permitted. 35 DSP0134 System Management BIOS (SMBIOS) Reference Specification Version Published 3 CONTENTS 36 Foreword .. 9 37 10 38 Document conventions .. 10 39 Typographical conventions .. 10 40 Document version number conventions.

5 10 41 1 Scope .. 13 42 Supported processor architectures .. 13 43 2 Normative references .. 13 44 3 Terms and definitions .. 15 45 4 Symbols and abbreviated terms .. 15 46 5 Accessing SMBIOS information .. 21 47 General .. 21 48 Table convention .. 21 49 SMBIOS (32-bit) Entry Point .. 22 50 SMBIOS (64-bit) Entry Point .. 23 51 6 SMBIOS structures .. 24 52 Structure standards .. 24 53 Structure evolution and usage guidelines .. 25 54 Structure header format .. 26 55 Text strings .. 26 56 Required structures and data.

6 27 57 SMBIOS fields and CIM MOF properties .. 28 58 7 Structure definitions .. 29 59 BIOS Information (Type 0) .. 29 60 BIOS 31 61 BIOS Characteristics Extension 32 62 System Information (Type 1) .. 33 63 System UUID .. 34 64 System Wake-up Type .. 35 65 Baseboard (or Module) Information (Type 2) .. 35 66 Baseboard feature flags .. 36 67 Baseboard Board Type .. 37 68 System Enclosure or Chassis (Type 3) .. 37 69 System Enclosure or Chassis Types .. 39 70 System Enclosure or Chassis 40 71 System Enclosure or Chassis Security Status.

7 41 72 System Enclosure or Chassis Contained 41 73 Processor Information (Type 4) .. 42 74 Processor Information Processor Type .. 45 75 Processor Information Processor Family .. 46 76 Processor ID field format .. 52 77 Processor Information Voltage .. 52 78 Processor Information Processor Upgrade .. 53 79 Processor Information Core 55 80 Processor Information Core Enabled .. 55 81 Processor Information Thread Count .. 56 82 Processor Characteristics .. 56 83 Memory Controller Information (Type 5, Obsolete).

8 57 84 Memory Controller Error Detecting Method .. 58 85 Memory Controller Error Correcting Capability .. 58 86 Memory Controller Information Interleave Support .. 58 87 System Management BIOS (SMBIOS) Reference Specification DSP0134 4 Published Version Memory Controller Information Memory Speeds .. 59 88 Memory Module Information (Type 6, Obsolete) .. 59 89 Memory Module Information Memory Types .. 60 90 Memory Module Information Memory Size .. 60 91 Memory subsystem example.

9 61 92 Cache Information (Type 7) .. 63 93 Cache Information Maximum Cache Size and Installed Size .. 65 94 Cache Information SRAM Type .. 65 95 Cache Information Error Correction Type .. 66 96 Cache Information System Cache Type .. 66 97 Cache Information Associativity .. 66 98 Port Connector Information (Type 8) .. 67 99 Port Information example .. 68 100 Port Information Connector Types .. 68 101 Port Types .. 69 102 System Slots (Type 9).. 70 103 System Slots Slot Type.

10 71 104 System Slots Slot Data Bus Width .. 73 105 System Slots Current Usage .. 74 106 System Slots Slot Length .. 74 107 System Slots Slot ID .. 74 108 Slot Characteristics 1 .. 75 109 Slot Characteristics 2 .. 75 110 Segment Group Number, Bus Number, Device/Function Number .. 76 111 Peer Devices .. 76 112 On Board Devices Information (Type 10, Obsolete) .. 76 113 Onboard Device Types .. 77 114 OEM Strings (Type 11) .. 77 115 System Configuration Options (Type 12).. 77 116 BIOS Language Information (Type 13).