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Engineering Change Orders

Tuesday, December 23, 2025
An engineering change order (ECO) is a change to a previously EAC-certified voting system’s hardware, documentation, or data that is minor in nature and effect. ECOs require voting system test laboratory review and endorsement as well as EAC approval. Any proposed change that is not deemed to be a minimal change is a modification and must be submitted for testing and review consistent with the EAC Testing and Certification Program requirements.

Engineering Change Orders

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Manufacturer

ECO Manufacturer Testing Lab Impacted Device/System Date Approved
ECN 125 MicroVote General Corp. Pro V&V

Microvote EMS

 04-29-2020
ECN 126 MicroVote General Corp. Pro V&V

MicroVote EMS 4.4

 07-10-2020
ECN 128 MicroVote General Corp. Pro V&V

EMS V4.1 system

 07-14-2020
ECN 129 MicroVote General Corp. Pro V&V

EMS 4.3-A

 07-14-2020
ECN 129 MicroVote General Corp. Pro V&V

MicroVote EMS V4.3-A System

 07-14-2020
ECN 130 MicroVote General Corp. Pro V&V

MicroVote EMS V4.41 System

 09-18-2020
ECN-132 MicroVote General Corp. Pro V&V

EMS V4.4-IN and V4.41 VVSG V1.0 compliant voting systems. 

 03-11-2021
ECN-134 MicroVote General Corp. Pro V&V

EMS V4.41 and EMS V4.4-IN

 08-18-2021
ECN-135 MicroVote General Corp. Pro V&V

MicroVote EMS Systems

 11-09-2021
MVT-136 MicroVote General Corp. Pro V&V

MicroVote EMS (Infinity and VVPAT components)

MicroVote EMS 4.0, 4.0B, 4.1, 4.2, 4.3-A, 4.4, and 4.41 systems

 03-30-2023
MVT-137 MicroVote General Corp. Pro V&V

MicroVote EMS (All-In-One Voting Station booth)

MicroVote EMS 4.0, 4.0B, 4.1, 4.2, 4.3-A, 4.4, and 4.41 systems

 03-30-2023
MVT-138 MicroVote General Corp. Pro V&V

Impacted Device:

Dell Latitude 3520, Dell Latitude 3540

Impacted System:

MicroVote EMS V4.41

 11-22-2023
MVT-139 MicroVote General Corp. Pro V&V

All EMS Versions:

 - MicroVote EMS 4.0

 - MicroVote EMS 4.0-B

 - MicroVote EMS 4.1

 - MicroVote EMS 4.2

 - MicroVote EMS 4.3-A

 - MicroVote EMS 4.4

 - MicroVote EMS 4.41

 08-14-2024
MVT-140 MicroVote General Corp. Pro V&V

Impacted Device:

Dell Latitude 3540, Dell Latitude 3550



Impacted System:

MicroVote EMS 4.41

 09-10-2025