Does HP Z420 compatible with SATA or NVMe ssd?

Slot Types m2 sata slot This adapter board simply connects the signal from the KEY B-M connector to the SATA 7PIN connector, so the adapter card does NOT need to be driven If you m2 slot types SATA 6Gbs 10+ · 8-9 · 5-7 · 1-4 USB USB Type-C · Front USB Type-C · Thunderbolt Ultimate Scalibility: 3*PCIe x16 slots for Multi-GPU and 4*PCIe x4

m2_1 slot NVMe: 1 Slot; SATA SSD: 1 Slot; Micro TF: Supports 32GB, 64GB, 128GB