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Seagate SATA boards · Explained

Seagate SATA PCB Lookup: Which Circuit Board Is Listed for a Seagate Drive

A Seagate drive's circuit board carries a nine-digit number that starts 100, plus a revision letter, for example 100815597 REV D, and the same model can be listed with more than one. Here is how to look a model, part number or board up in a list of 39 listings on 20 board numbers, and what a published listing does and does not tell you.

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Quick answer

A Seagate SATA drive's board number is nine digits starting 100, printed on the circuit board with a revision such as REV A. The model on the label does not name it: the same model is listed with different boards, and one board number with more than one revision. A listing is a pointer, not an approval: the revision, the drive's own ROM and its security state all have to match as well. Our list holds 39 listings of 27 models on 20 board numbers. Look up your drive below.

The short answer

What does a Seagate board number tell you?

A Seagate SATA drive has two sets of numbers. The label names the drive: a model such as ST8000DM004, a part number (P/N) such as 2CX188-568 and a firmware version (FW). The circuit board names itself: a nine-digit number that starts 100, and a revision letter.

ST8000DM004 2CX188-568 · 0001 100815597 REV D Model on the label Starts with ST Part number and firmware P/N and FW on the label Board number and revision Printed on the board itself Also compare A matching number alone is not enough REV D or REV G exact revision · the drive's own ROM · security state ST8000DM004 2CX188-568 · 0001 100815597 REV D Model on the label Starts with ST Part number and firmware P/N and FW on the label Board number and revision Printed on the board itself Also compare REV D or REV G exact revision · the drive's own ROM · security state
Reading ST8000DM004-2CX188-568. In our list this label is listed with the board 100815597 in two revisions, REV D and REV G. The exact revision on your board, the drive's own ROM and its security state still have to be checked.

Published lists record which board was found under which model, part number and firmware, and this page collects 39 of those listings in one place. The same model can be listed with more than one board, and 3 board numbers are listed with more than one revision, so a model alone never names the board. On many Seagate drives the board also carries a ROM that belongs to that drive, so a board with the same number from another drive is not a like-for-like replacement. This is a working record, not Seagate documentation. The firmware family of a model is on the Seagate Firmware Family Lookup, and Seagate Data Recovery covers the drives themselves.

Look it up

Look up a Seagate model or board

Type the model from your drive's label, its part number or firmware, the board number printed on the board, or a firmware family. The list covers 39 listings of 27 models on 20 board numbers, and 13 firmware families.

Type the model from your drive's label, its part number (P/N) or firmware (FW), the nine-digit board number printed on the board (100xxxxxx, with or without REV) or a firmware family.

Try

39 listings · 27 models · 20 board numbers · 13 firmware families. A working list compiled for CBL and last updated 14 Nov 2026. It is not an official Seagate list and has not been checked board by board, so treat a match as a pointer and confirm it on the drive itself. See the full list. Spotted a mistake or a missing model? Tell us.

Step by step

How to find your drive's board

  1. Step 1: Read the label

    The label carries the model (it starts with ST), the part number (P/N) and the firmware (FW), for example ST8000DM004, P/N 2CX188-568, FW 0001. Type the model and the whole part number: the digits after the dash can change the board.

  2. Step 2: Find the board number

    The circuit board carries a nine-digit number that starts 100 and a revision, for example 100815597 REV D. If you cannot read it without unscrewing the board, leave it. We read it for you in a free diagnosis.

  3. Step 3: Look it up

    Type the model, part number, firmware or board number into the box above. A model that is not listed in full still shows its other listings.

  4. Step 4: Read the answer with care

    A listing is a pointer, not an approval. “Single case” means the listing rests on one technician's case, and “held” means published claims conflict. A model can be listed with two boards and a board with two revisions, so read the number and the revision on your own board.

In the lab

Why a recovery lab reads the model and the board

When a Seagate drive stops responding, the first question is whether the fault is in the firmware, the heads or the board. The model, the part number and the board number narrow the choices.

What a listing tells you

  • Which board number and revision published lists name for a Seagate model, part number and firmware.
  • Whether the board is one of those with two ROM chips, or one whose ROM can be hard to reach, where the lists say so.
  • What to check next: the revision printed on the board, the firmware and the drive's own ROM.

What it does not tell you

  • That a board will work: the revision, the drive's own ROM and its security state all have to match, and a matching number alone is not enough.
  • That your data can be read: unlocking firmware or matching a board does not decrypt user data.
  • That the list is complete: Seagate has made far more boards than published lists cover.

Don't swap boards or move chips at home

On many Seagate drives the board carries the ROM that holds the drive's own settings. Fitting another board, or moving a ROM, can destroy those settings and turn recoverable data into lost data. If your Seagate drive is not detected or beeps, power it off and call us.

The whole list

Seagate SATA boards and their listings: the full list

All 20 board numbers in our list (24 revisions) with the 39 listings on them, then the 27 models with the board listed for each part number, the 13 firmware families and 11 unresolved points. 6 listings sit on boards with two ROM chips and 4 on boards whose ROM can be hard to reach; one rests on a single technician's case and one is held because published claims conflict. Use the box above to find one quickly.

20 board numbers · 39 listings · 13 families

  • ST1000LM014 1EJ164-306 · SM28Named by a published list
  • ST2000LM007 1R8174-570 · EB01A single technician's case
  • ST2000DM008 2UB102-300 · 0001Held: claims conflict

20 board numbers and the 39 listings on them

100706008

Board listed

REV C · 1 listing

ROM chip details and the lock status are not verified for this board.

  • ST4000NM0033 9ZM170-004 · SN04

100710248

Board listed

REV C · 2 listings

ROM chip details and the lock status are not verified for this board.

  • ST4000VM000 2AF166-500 · SC11
  • ST4000VN000 1H4168-505 · SC44

100729420

Board listed

REV B · 1 listing

ROM chip details and the lock status are not verified for this board.

  • ST500LT012 1DG142-030 · 0003SDM1

100731589

Board listed

REV A · 1 listing

ROM chip details and the lock status are not verified for this board.

  • ST1000LM014 1EJ164-306 · SM28

100762568

Board listed

REV A · 2 listings

ROM chip details and the lock status are not verified for this board.

  • ST3000DM001 1ER166-044 · AQ03
  • ST3000DM008 2DM166-570 · CC46

100764651

Board listed

REV A · 2 listings

ROM chip details and the lock status are not verified for this board.

  • ST2000NM0033 9ZM175-004 · SN04
  • ST3000NM0033 9ZM178-076 · LV40

100781943

Board listed

REV A · 3 listings

ROM chip details and the lock status are not verified for this board.

  • ST1000LM035 1RK172-568 · SBM3
  • ST2000LM007 1R8174-286 · SDM2
  • ST2000LM007 1R8174-567 · SBK2

100794976

Board listed

REV C · 1 listing

ROM chip details and the lock status are not verified for this board.

  • ST5000LM000 2AN170-566 · 0001

100797092

Board listed

REV A · 1 listing

ROM chip details and the lock status are not verified for this board.

  • ST3000DM003 2AE16L-568 · 0001

100800538

Board listed

REV A · 1 listing

ROM chip details and the lock status are not verified for this board.

  • ST4000DM004 2CV104-567 · 0001

100802503

Board listed

REV A · 1 listing

ROM chip details and the lock status are not verified for this board.

  • ST5000DM003 2FH18L-568 · 0001

100809471

Board listed

REV A · 4 listings

ROM chip details and the lock status are not verified for this board.

  • ST1000LM035 1RK172-568 · SBM3
  • ST1000LM048 2E7172-500 · SDM1
  • ST2000LM007 1R8174-070 · LDM2
  • ST2000LM007 1R8174-120 · SS22

100815565

Board listed

REV A · 3 listings

ROM chip details and the lock status are not verified for this board.

  • ST1000LM038 1RD172-500 · SDM1
  • ST2000LM007 1R8174-120 · SS22
  • ST2000LM007 1R8174-189 · ACM2

100815595

Board listed

REV D · 2 listings

ROM chip details and the lock status are not verified for this board.

  • ST2000DM005 2CW102-300 · 0001
  • ST4000DM004 2CV104-568 · 0001

100815597

Board listed

REV D, REV G · 3 listings

ROM chip details and the lock status are not verified for this board.

  • ST6000DM003 2CY186-300 · 0001 · REV D
  • ST8000DM004 2CX188-568 · 0001 · REV D
  • ST8000DM004 2CX188-568 · 0001 · REV G

100835923

Includes a single case

REV A, REV B · 3 listings

A separate ROM chip. This board and its ROM belong together. The listing ties this board to the drive's original controller. No chip details are published.

  • ST1000LM035 1RK172-570 · EB01 · REV A
  • ST2000LM007 1R8174-570 · EB01 · REV A
  • ST2000LM007 1R8174-570 · EB01 · REV B (single case)

100852967

Board listed

REV A, REV B, REV C · 3 listings

Two ROM chips of a non-standard kind. The two chips have to be handled together. No chip details are published for it. ROM: 2 × 4096 KiB.

  • ST12000NM001J 2TY113 · SS04 · REV C
  • ST16000NM000J 2TW103 · SBC2 · REV B
  • ST20000NM001J 2U6101 · SET1 · REV A

100870247

Board listed

REV A · 1 listing

ROM chip details and the lock status are not verified for this board.

  • ST8000DM004 2U9188-300 · 0001

100870255

Held: claims conflict

REV A · 1 listing

Published sources disagree on where the ROM is: one seller says it is built into the controller, a family guide describes a separate chip. A D0/D1-era board. Do not assume that another controller or ROM chip is a like-for-like replacement.

  • ST2000DM008 2UB102-300 · 0001 (held: published claims conflict)

100871827

Board listed

REV A · 3 listings

Two ROM chips of a non-standard kind. The two chips have to be handled together. No chip details are published for it. ROM: 2 × 4096 KiB.

  • ST4000NM000B 2TF100 · TN01
  • ST4000NM024B 2TF103 · SN01
  • ST8000NM017B 2TJ103 · SN03

27 models and the board listed for each part number

Each line is a part number and firmware as printed on the label, and the board and revision it is listed with. The same part number can appear twice when two boards are listed for it.

ST2000DM008

Held: claims conflict
  • 2UB102-300 · FW 0001 → 100870255 REV AFamily D0ROM access restrictedHeld

13 firmware families

The family IDs and names that published lists use, with what they say about the ROM and the boards. The family of a particular model is on the Seagate Firmware Family Lookup.

8C

SSHD and related drives

The flash memory on the board of a hybrid drive can be specific to that board, so the ROM alone may not be the whole story. The Seagate Firmware Family Lookup lists the same ID under Rosewood.

Models: ST1000LX015

    91

    Various enterprise subfamilies

    ROM sizes of both 512 KiB and 2048 KiB are reported, so no single size can be given.

      A2

      Newer enterprise

      No board or ROM details are published for it.

      Models: ST12000NM0127-G004/G005

        AF

        Rosewood (new AF)

        On newer units the ROM may not be readable through the drive's own boot code, and two units with the same board revision can differ.

        Boards: 100835923 REV A, 100835923 REV B (specific units) · Models: ST1000LM035-1RK172, ST2000LM007-1R8174

        • ST1000LM035 1RK172-570 · EB01 · REV A
        • ST2000LM007 1R8174-570 · EB01 · REV A
        • ST2000LM007 1R8174-570 · EB01 · REV B (single case)

        B4

        Mobula (some models)

        The 2048 KiB size is reported for the listed Mobula cases only.

        ROM 2048 KiB · Models: ST10000NM0568-2H5110, ST12000NM0008-2H3101, ST14000NM0018-2H4101

          B5

          Enterprise

          The ROM size has to be confirmed drive by drive.

            BC

            Evans

            A size of 2048 KiB is reported for the listed Evans cases; the exact board is not specified.

            ROM 2048 KiB · Models: ST10000NM001G-2MW103, ST16000NM001G-2KK103

              C6

              CimarronBP

              Two ROM chips of 4096 KiB each, of a non-standard kind. Published sources disagree about what the two contents hold.

              ROM 2 × 4096 KiB · Boards: 100871827 REV A · Models: ST4000NM000B, ST4000NM024B, ST8000NM017B

              • ST4000NM000B 2TF100 · TN01 · REV A
              • ST4000NM024B 2TF103 · SN01 · REV A
              • ST8000NM017B 2TJ103 · SN03 · REV A

              C8

              EvansBP

              Two ROM chips of 4096 KiB each. The exact board revision matters, and a published source warns that a simple board swap is not enough.

              ROM 2 × 4096 KiB · Boards: 100852967 REV A, 100852967 REV B, 100852967 REV C · Models: ST12000NM001J, ST16000NM000J, ST20000NM001J

              • ST12000NM001J 2TY113 · SS04 · REV C
              • ST16000NM000J 2TW103 · SBC2 · REV B
              • ST20000NM001J 2U6101 · SET1 · REV A

              CF

              New CF

              Restrictions on reading the ROM apply, and there is no universal replacement board.

                D0

                JanusR2

                Where the ROM sits on the exact board (100870255) has to be established on the drive itself.

                Boards: 100870255 REV A (one example) · Models: ST2000DM008-2UB102, ST1000DM014-2UB10D

                • ST2000DM008 2UB102-300 · 0001 · REV A (held: published claims conflict)

                D1

                JanusR2 (variant)

                Do not assume that every D1 model uses board 100870255.

                Models: ST1000DM014-2UB10D

                  D5

                  A newer generation with a restricted ROM

                  No ROM size or board revision is verified for it.

                    Unresolved points

                    11 points where the published sources disagree or leave a question open. Our list takes no side.

                    100835923 REV A: reading the ROM varies

                    Published reports differ: some units with this board can be read and others are locked. The unit itself has to be checked.

                    100835923 REV B: a reported refusal

                    In one reported case a matching board refused the original drive's signed firmware. Matching the board number is not a confirmed way through.

                    100870255 REV A: where is the ROM?

                    Published sources disagree. One seller says the ROM is built into the controller; a family guide describes a separate chip. Our list takes no side: the board has to be inspected.

                    100815597: REV D and REV G

                    The same model and part number is listed with both revisions. Match the revision printed on the board.

                    100871827 REV A: two ROM chips

                    Two ROM chips of 4096 KiB each, of a non-standard kind, and how they bind to the user's data is complicated.

                    100852967 REV A, B and C: two ROM chips

                    Two ROM chips of 4096 KiB each. The three models listed use three different revisions, so the exact revision matters.

                    AF, CF, D0, D1 and D5: two different restrictions

                    A lock on the drive's firmware area and a block on reading its ROM are not the same restriction. Both have to be established for the exact drive.

                    B4, BC and 91: ROM size

                    A ROM size of 2048 KiB is reported for the listed B4 and BC cases, and family 91 is reported at both 512 KiB and 2048 KiB. No size can be given for a whole family.

                    Hybrid drives (SSHD)

                    The board of a hybrid drive also holds flash memory that can matter, so the ROM alone may not be the whole story.

                    ROM chip details

                    For most boards on our list no ROM chip details are published, so none are given here.

                    Self-encrypting enterprise drives: unlocking is not decrypting

                    Unlocking a drive's firmware does not decrypt its data: signed firmware or the controller can be part of the drive's security. The original board and its ROM have to be kept as they are.

                    Answers

                    Seagate SATA PCB FAQ

                    A nine-digit board number that starts 100, followed by a revision such as REV A or REV D. It names the board, not the drive, and it is not the number of the ROM chip or the controller on it.

                    No. The part number and the firmware can change the board, and one label can be listed with two boards: ST2000LM007-1R8174-120 is listed with 100809471 and 100815565 in our list. A board number can also have more than one revision, so read the number and the revision on your own board.

                    The letter is the revision of the board. The same model and part number can be sold with more than one revision, so the revision has to match as well. In our list 100815597 (REV D and REV G), 100835923 (REV A and REV B) and 100852967 (REV A, REV B and REV C) have more than one, and ST8000DM004-2CX188-568 is listed with both REV D and REV G of 100815597.

                    We advise against it. On many Seagate drives the board carries a ROM that belongs to that drive, so a board with the same number from another drive is not a like-for-like replacement, and a wrong swap can destroy the drive's own settings. If your drive is not detected, power it off and ask for a free diagnosis.

                    6 listings on the boards 100852967 and 100871827 have two ROM chips of 4096 KiB each, of a non-standard kind. That makes them a specialist job, and published sources disagree about what the two contents hold.

                    A listing is held when published claims conflict. Our list holds ST2000DM008-2UB102-300 on 100870255 REV A: one seller says the ROM is built into the controller, a family guide describes a separate chip, and our list takes no side.

                    The listing rests on one technician's case. In our list that is ST2000LM007-1R8174-570 on 100835923 REV B, where a matching board refused the original drive's firmware. Treat it as a pointer, not as proof.

                    No. Unlocking a drive's firmware is not the same as decrypting its data. On self-encrypting drives, signed firmware or the controller can be part of the security, so the original board and its ROM have to be kept as they are.

                    Firmware families, as published lists name them: AF (Rosewood), D0 (JanusR2), C6 (CimarronBP), C8 (EvansBP) and others. 13 are on this page, with what the lists say about their ROM and boards. The family is not part of the board number: the family of a particular model is on the Seagate Firmware Family Lookup.

                    That page answers which family a Seagate model is in, and this one answers which board it is listed with. 22 listings here also appear there, and the answer shows both. Open the Seagate Firmware Family Lookup.

                    It is a working list compiled for CBL from published records: 39 listings of 27 Seagate models on 20 board numbers (24 revisions). It is not an official Seagate list, has not been checked board by board and is not every Seagate drive, so a match is a pointer, not proof. Weaker rows are marked in it.

                    No. The list is selective, not every Seagate drive ever made. A free diagnosis at our lab identifies the exact board, firmware and fault.

                    No. Power it off: hunting for boards, moving chips or opening the drive makes recovery harder. A free diagnosis tells you what has failed, and you get a fixed written quote before any work begins. Seagate Data Recovery explains what we do for each kind of Seagate fault.

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