No b28 as PRXSFENG said, I've seen this same modem on TB before, wanted to buy but no B28 which is unfortunate

There's a lot of not branded stuff on TB for mobile 5G modem, those I don't really trust to work in the long term (Such as TB 5G MTK Modem, supports B28 but looks meh overall)

I'm currently just using a 5G USB board and GL iNet router, but I got the 5G module together with a RK3568 based OpenWRT single board router, downside is it's expensive with around RM1.4k, but upside is open source and I don't have to worry about it getting obsolete)