Tripp Lite Eaton Series SMART1500LCDXNC - Noise Level on Mains Power (Not Battery)?

Anyone out there have one of these?

Ref: https://www.eaton.com/us/en-us/skuPage.SMART1500LCDXNC.html

I'd be putting it in a 9U rack under a desk in my bedroom office, so I'm really curious about the noise level.

I've used a Cyberpower PFC1500LCD and an APC SMT1500C, and those are both effectively silent unless they're on battery.

Since I'm looking to replace the SMT1500C, I'm really hoping the Eaton behaves similarly.

Any feedback would be really useful.

Thanks!