QNAP QM2 CARD.Host interface:M.2, Output interface:PCIe, Expansion card form factor:Low profile.Product colour:Silver, Purpose:PC.Width:152.7 mm, Depth:68.9 mm, Height:18.9 mm.Specifications:-Host int more→erface:M.2.-Serial interface type:RJ-45.-Serial port:1.-Number of M.2 slots (M):2.-Expansion card standard:PCI 3.0.-Expansion Card Form Factor:Low Profile.-Output interface:PCIe.-Depth:68.9 mm.-Width:152.7 mm.-Height:18.9 mm.-Use with:PC.-Product color:Silver.-Internal:Yes.