how to check nvme slot in laptop

I need to know because I want to know if it's worth to buy an NVME or just SATA SSD. k77 slot The HP manual doesn't state it: http://h10032. pulau 77 slot www1 hp com/ctg/Manual/c05695301 It only says "512 GB, PCIe, NVMe, TLC" - Does that also mean that it only supports up to 512 of NVME drive and not 1TB?