# Compatibility between PTP450i and PTB450? **URL:** https://community.cambiumnetworks.com/t/compatibility-between-ptp450i-and-ptb450/108016 **Category:** PTP **Created:** [January 16, 2026, 4:52am UTC](https://community.cambiumnetworks.com/t/compatibility-between-ptp450i-and-ptb450/108016 "2026-01-16T04:52:28Z") **Posts on this page:** 1 **Page:** 1
### Author: ![whatSNR](https://d10gw3vjmzyp8.cloudfront.net/letter_avatar_proxy/v4/letter/w/eb9ed0/32.png) [@whatSNR](https://community.cambiumnetworks.com/u/whatSNR) #### Post date: [January 16, 2026, 4:52am UTC](https://community.cambiumnetworks.com/t/compatibility-between-ptp450i-and-ptb450/108016/1 "2026-01-16T04:52:29Z")
Can I interface a PTP450i with a PTB450 radio? Both are 8x MIMO compatible but I imagine the PTB450 will bottleneck the speed across the link. Release notes seem to suggest that the frequency is supported but don’t mention the interoperability between the units. > [@PMP450x System Release 25.0 is now available](https://community.cambiumnetworks.com/t/pmp450x-system-release-25-0-is-now-available/107730#p-225341-h-5-ghz-support-for-australia-and-new-zealand-for-450v-products-16): > > PMP450x System Release 25.0 is now available at [https://support.cambiumnetworks.com/files/pmp450](https://support.cambiumnetworks.com/files/pmp450) and it will be available on cnMaestro cloud within 24hours. Warnings, caveats and software upgrade notes TX power adjustment on 4x4 APs after upgrading from Release 24.x to Release 25.x The Configuration → Radio Transmit Power field now interprets and uses the operator entered value as a “per carrier” power and not a “per component carrier” power. Because of this, there are two cases where operato… > [@PMP450x System Release 25.0 is now available](https://community.cambiumnetworks.com/t/pmp450x-system-release-25-0-is-now-available/107730/5): > > snorthway, R25.0 software does not support the Legacy P12 APs. Those should not be upgraded beyond 24.2.2. See the 24.2.2 or the 25.0 release notes for text on this. You can upgrade all the other platforms - the P11 SMs, 450i, 450m, 450b, etc, but not the P12 Legacy APs. Anthonyw is correct in that most of the improvements in R25.0 are on the 450v platforms. But there are a few improvements on the other platforms, and support/debug is generally easier when operators are on the newer softwa… Many thanks in advance.