# What changed between GigaBlox revisions BB-GGB-C-CO2 and BB-GGB-C-3?

**URL:** <https://forum.botblox.org/t/what-changed-between-gigablox-revisions-bb-ggb-c-co2-and-bb-ggb-c-3/646>\
**Category:** BotBlox Hardware\
**Tags:** gigablox\
**Created:** [September 10, 2026, 2:53pm UTC](https://forum.botblox.org/t/what-changed-between-gigablox-revisions-bb-ggb-c-co2-and-bb-ggb-c-3/646 "2026-09-10T14:53:31Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![ElsieMichaelson](https://avatars.discourse-cdn.com/v4/letter/e/b5ac83/32.png) [@ElsieMichaelson](https://forum.botblox.org/u/ElsieMichaelson)\
**Post date:** [September 10, 2026, 2:53pm UTC](https://forum.botblox.org/t/what-changed-between-gigablox-revisions-bb-ggb-c-co2-and-bb-ggb-c-3/646/1 "2026-09-10T14:53:31Z")

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_This topic was migrated from the BotBlox ticketing system after being summarized and anonymized._

BB-GGB-C-3 replaces BB-GGB-C-CO2 with **no changes to form, fit, or function**. The board’s dimensions and functionality remain the same.

The U1 DC/DC voltage regulator changed from **TPS54160DGQ to TPS54260DGQ** because of component availability and long lead times. This component substitution allowed manufacturing to continue without delays and was recorded as a revision change.

For more details, see the **Revision Tracker** on the [GigaBlox product page](https://shop.botblox.com/products/gigablox-small-gigabit-switch).