# What is max MTU frame size on BB-SWB-E-1?

**URL:** <https://forum.botblox.org/t/what-is-max-mtu-frame-size-on-bb-swb-e-1/530>\
**Category:** BotBlox Hardware\
**Tags:** switchblox\
**Created:** [February 18, 2026, 5:43pm UTC](https://forum.botblox.org/t/what-is-max-mtu-frame-size-on-bb-swb-e-1/530 "2026-02-18T17:43:49Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![botblox\_admin](https://yyz1.discourse-cdn.com/flex027/user_avatar/forum.botblox.org/botblox_admin/32/1_2.png) [@botblox\_admin](https://forum.botblox.org/u/botblox_admin)\
**Post date:** [February 18, 2026, 5:43pm UTC](https://forum.botblox.org/t/what-is-max-mtu-frame-size-on-bb-swb-e-1/530/1 "2026-02-18T17:43:49Z")

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Hello, I’ve looked through the datasheet and docs and don’t see this info anywhere. What’s the MTU size the BB-SWB-E-1 switch is configured for? I’d also take any additional deeper info.

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**Author:** ![josh\_elijah](https://yyz1.discourse-cdn.com/flex027/user_avatar/forum.botblox.org/josh_elijah/32/568_2.png) [@josh\_elijah](https://forum.botblox.org/u/josh_elijah)\
**Post date:** [February 18, 2026, 5:44pm UTC](https://forum.botblox.org/t/what-is-max-mtu-frame-size-on-bb-swb-e-1/530/2 "2026-02-18T17:44:14Z")

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The max MTU size on BB-SWB-E-1 is 1536 bytes. This also applies for SwitchBlox Nano, as it uses the same chip.