# Powering PTP450 backhaul to cnmatrix TX2028

**URL:** https://community.cambiumnetworks.com/t/powering-ptp450-backhaul-to-cnmatrix-tx2028/107984
**Category:** cnMatrix
**Created:** [January 5, 2026, 2:24pm UTC](https://community.cambiumnetworks.com/t/powering-ptp450-backhaul-to-cnmatrix-tx2028/107984 "2026-01-05T14:24:28Z")
**Posts on this page:** 2
**Page:** 1

<div class="post-metadata">

### Author: ![Khaled\_Shaaban](https://d10gw3vjmzyp8.cloudfront.net/letter_avatar_proxy/v4/letter/k/5f9b8f/32.png) [@Khaled\_Shaaban](https://community.cambiumnetworks.com/u/Khaled_Shaaban)
#### Post date: [January 5, 2026, 2:24pm UTC](https://community.cambiumnetworks.com/t/powering-ptp450-backhaul-to-cnmatrix-tx2028/107984/1 "2026-01-05T14:24:28Z")

</div>

Hello guys,

could we power a legacy ptp450 backhaul to the switch Cnmatrix TX2028 ? we know the SW does not support that. but is there any method ?

---

<div class="post-metadata">

### Author: ![Matt\_Hopkins](https://d10gw3vjmzyp8.cloudfront.net/user_avatar/community.cambiumnetworks.com/matt_hopkins/32/26683_2.png) [@Matt\_Hopkins](https://community.cambiumnetworks.com/u/Matt_Hopkins)
#### Post date: [January 5, 2026, 9:57pm UTC](https://community.cambiumnetworks.com/t/powering-ptp450-backhaul-to-cnmatrix-tx2028/107984/2 "2026-01-05T21:57:10Z")

</div>

You may find luck by swapping blues and browns in the RJ45 pinout on one end of the cable. This is NOT for 450i, etc. only PTP450. I have not tried this with the EX2028.