# DSQC639  and mainboard - versions/part numbers

**URL:** <https://tech-community.robotics.abb.com/t/dsqc639-and-mainboard-versions-part-numbers/12125>\
**Category:** IRC5\
**Created:** [January 9, 2026, 9:14am UTC](https://tech-community.robotics.abb.com/t/dsqc639-and-mainboard-versions-part-numbers/12125 "2026-01-09T09:14:51Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![daniel72](https://avatars.discourse-cdn.com/v4/letter/d/b9e5f3/32.png) [@daniel72](https://tech-community.robotics.abb.com/u/daniel72)\
**Post date:** [January 9, 2026, 9:14am UTC](https://tech-community.robotics.abb.com/t/dsqc639-and-mainboard-versions-part-numbers/12125/1 "2026-01-09T09:14:51Z")

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An internet search using AI gave me the following results:  
The DSQC639 was available from ABB in several versions with corresponding part numbers: 3HAC025527-004 is the original or older part number for this computer unit. 3HAC041443-003 is the current or replacement part number used by ABB/replacement parts suppliers today—both numbers refer to the same part.  
Both versions are compatible/identical!

Is this correct? Can anyone confirm this?

Because the number doesn’t tell anything about the installed motherboard, does it?

3HAC025097-001 - This is the mainboard bare, without a complete metal case, but with various hardware versions:  
• 3HAC025097-001/08  
• 3HAC025097-001/11  
• 3HAC025097-001/13  
• 3HAC025097-001/1

Is there an overview of the mainboard versions? What are the performance differences? What about compatibility? Can you see in the backup which mainboard/computer is installed?

Thank You

Daniel