100706008
Board listedREV C · 1 listing
ROM chip details and the lock status are not verified for this board.
- ST4000NM0033 9ZM170-004 · SN04
Seagate SATA boards · Explained
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.
4.9 / 5915 reviews · Cleanroom lab (opens Google in a new tab)5 min read · Updated 2026-11-14
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
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.
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
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.
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
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.
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.
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.
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
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.
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
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.
REV C · 1 listing
ROM chip details and the lock status are not verified for this board.
REV C · 2 listings
ROM chip details and the lock status are not verified for this board.
REV B · 1 listing
ROM chip details and the lock status are not verified for this board.
REV A · 1 listing
ROM chip details and the lock status are not verified for this board.
REV A · 2 listings
ROM chip details and the lock status are not verified for this board.
REV A · 2 listings
ROM chip details and the lock status are not verified for this board.
REV A · 3 listings
ROM chip details and the lock status are not verified for this board.
REV C · 1 listing
ROM chip details and the lock status are not verified for this board.
REV A · 1 listing
ROM chip details and the lock status are not verified for this board.
REV A · 1 listing
ROM chip details and the lock status are not verified for this board.
REV A · 1 listing
ROM chip details and the lock status are not verified for this board.
REV A · 4 listings
ROM chip details and the lock status are not verified for this board.
REV A · 3 listings
ROM chip details and the lock status are not verified for this board.
REV D · 2 listings
ROM chip details and the lock status are not verified for this board.
REV D, REV G · 3 listings
ROM chip details and the lock status are not verified for this board.
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.
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.
REV A · 1 listing
ROM chip details and the lock status are not verified for this board.
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.
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.
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.
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.
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
ROM sizes of both 512 KiB and 2048 KiB are reported, so no single size can be given.
No board or ROM details are published for it.
Models: ST12000NM0127-G004/G005
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
The 2048 KiB size is reported for the listed Mobula cases only.
ROM 2048 KiB · Models: ST10000NM0568-2H5110, ST12000NM0008-2H3101, ST14000NM0018-2H4101
The ROM size has to be confirmed drive by drive.
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
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
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
Restrictions on reading the ROM apply, and there is no universal replacement board.
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
Do not assume that every D1 model uses board 100870255.
Models: ST1000DM014-2UB10D
No ROM size or board revision is verified for it.
11 points where the published sources disagree or leave a question open. Our list takes no side.
Published reports differ: some units with this board can be read and others are locked. The unit itself has to be checked.
In one reported case a matching board refused the original drive's signed firmware. Matching the board number is not a confirmed way through.
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.
The same model and part number is listed with both revisions. Match the revision printed on the board.
Two ROM chips of 4096 KiB each, of a non-standard kind, and how they bind to the user's data is complicated.
Two ROM chips of 4096 KiB each. The three models listed use three different revisions, so the exact revision matters.
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.
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.
The board of a hybrid drive also holds flash memory that can matter, so the ROM alone may not be the whole story.
For most boards on our list no ROM chip details are published, so none are given here.
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
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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