I have three old but reliable OptiPlex 780 USFF desktops. All these desktops have a label inside with a large "3" and the text "ME disabled" on them.
What does this label means? Is it really referring the the Intel Management Engine being disabled at factory, or just the Intel Active Management Technology?
As you surely know Intel ME and AMT are different, even if the latter requires the former. I am looking for machines that truly have ME disabled, not just the AMT part. Has been Intel ME completely disabled on these small desktops?
Short: Advanced Client Systems Management,w/vPro,OPTI Long: Advanced Client Systems Management,with vPro,Dell OptiPlex Option Online: Advanced Client Systems Management (w/ vPro) MOD MOD,LBL,MGMT,VPRO/AMT/DASH
1
AMT DASH Ready
310-9494
HP413
Short: Advanced Client Systems Management,w/iAMT,OPTI Long: Advanced Client Systems Management,with iAMT,Dell OptiPlex Option Online: Advanced Client Systems Management (w/ iAMT) MOD MOD,INFO,MGMT,AMT/DASH,OPTI
2
ASF Only
310-9492
CU377
Short: Basic Client Systems Management,w/ASF,OPTI Long: Basic Client Systems Management,with ASF,Dell OptiPlex Option Online: Basic Client Systems Management (w/ ASF) MOD MOD,INFO,MGMT,ASF ENABLED
3
ME Disabled
310-9493
XT411 NN180
Short: Client Systems Management Disabled,OPTI Long: Client Systems Management Disabled, Dell OptiPlex Option Online: Client Systems Management Disabled MOD MOD,INFO,MGMT,MEBX,DISABLE,OPT MOD MOD,INFO,1-WATT,BIOS,OPTI,755
Deployment Mode
N/A
Disables Remote Configuration
310-9495
CU378
Short: One Touch Provisioning Support,OPTI Long: One Touch Provisioning Support, Dell OptiPlex Option Online: One Touch Provisioning Support MOD MOD,INFO,MGMT,ONE TOUCH CNFG
2
ASF with AMT option
310-9497
WK835
Short: LEGACY ASF SETTING FOR IAMT,OPTI Long: Legacy ASF Setting for iAMT,Dell OptiPlex Option Online: Legacy ASF Setting for iAMT MOD MOD,INFO,MGMT,ASF ROLL BACK
but all that can be turned off in BIOS, if you look, did you first and upgrade BIOS? Freedos method more safe?
yes disable it , it is bug ridden for sure on old PC.
ME/AMT BIOS is very complex and with PCs advanced security packages works as team. and is risky.
its cute though, tried it 1 time on HP, and found later the w10 software for it is no good,(exploits) and will never be upgraded from my PC with it, so its is gone.
I think if BIOS PW is off, fully there is no AMT, (my theory)
No. Intel Management Engine (ME) cannot be disabled in BIOS, only Active Management Technology (AMT) can. There is a huge difference between ME and AMT. I am talking about the former, the autonomous subsystem that runs inside the Platform Controller Hub (PCH) on most mainboards manufactured in the last decade.
I fail to see how it can be related to BIOS not being updated. Indeed, the BIOS on these desktops has been updated to its most recent release (A15) using a Dell Real-Mode Kernel bootable USB drive (a Dell RMK bootable drive that only contains COMMAND.COM, DELLBIO.BIN and DELLRMK.BIN plus the O780-A15.EXE executable).
I know for sure these desktops do not have —and never had— support for AMT on BIOS, nor a hotkey to enter the Management Engine BIOS extension (MEBx). But —as I said on the first post— AMT is not the problem, ME is.
Edit: note that Intel ME is a requirement for AMT, but the reverse is not true. In other words, you cannot have AMT without ME but you can have ME without AMT. I never though on AMT being a backdoor (at most it can have horrifying bugs like CVE-2017-5689), but ME is another matter. This engine is running on most processors built in the last decade even if AMT is fully unprovisioned; it is the right place to build a backdoor if the intelligence community wants one.
Now Dell is selling workstations like the Precision 3431 Desktop with two different non-manageable processor options ("AMT disabled" and "both ME and AMT disabled"). The latter is the right one for someone that cares about security at the hardware level.
That is interesting... so, if there is no S1 power state configurable on the BIOS setup then there is no support for Intel ME? These are great news, as the BIOS on these desktops never had a "Power Management → Suspend Mode" option at all.
That's odd, I downloaded that manual some time ago and looked at the BIOS settings. But, for some reason, I missed the description of the power state configuration. To be honest, I had spent more time on the Dell OptiPlex 780 Technical Guidebook as it has a more pleasant format and supposedly has the same information about BIOS defaults. I guess it is time to read more carefully the service manual.
If someone disagrees please say it loud! But, as I understand it now, this one is the right answer; as the BIOS setup never had an option to enable the S1 power state it seems not only AMT but also ME have been disabled on factory. These are fine desktops with the configuration I am looking for.
Speedstep hasn't been on this forum for a year now. One of our other contributors might answer if they can.
Meanwhile, the screenshot is the F12 Boot and Diagnostics menu. Immediately and repeatedly press F12 upon startup. I've never seen the text in green before.
U2CAMEB4ME
6 Operator
•
6245 Posts
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Posted July 24th, 2019 08:00
Welcome to the Dell Community @_abednego
Suspend Mode:
Sets the power management suspend mode to:
S1
S3 (default)
NOTE: If the AMT Management Engine (ME) of the system is disabled, the S1 suspend mode is
unavailable in the system setup.
Dell OptiPlex 780 Service Manual--Ultra Small Form Factor Computer:
https://downloads.dell.com/manuals/all-products/esuprt_desktop/esuprt_optiplex_desktop/optiplex-780_service%20manual4_en-us.pdf
Best regards,
U2