ITEM NAME:PCI-E 3.0 x4 to M.2 NGFF M Key Slot Converter Adapter and Low profile brack #gib Store Home Promotion Hot Item Add to Fav.M.2 NGFF to PCI-E 14 transfer card, the use of this adapter can turn the common PCI-E 4X interface to the M.2 NGFF interface. There are 4 fixed holes on the board, 22 32 mm, 22 42 mm, 22 60 mm, and 22 80 mm, respectively.