I could be wrong about this (someone correct me if I am), but I think the first half is the module designation, including revision (in this case 0002):
p3448-0002
The second half is the carrier board plus revision:
p3449-0000-b00
The “T210” series is the TX1 SoC (and Nano also uses the TX1 SoC). TX2 would be T186, and anything Xavier would be T194. The much older TK1 is the T124.