1. M.2 to PCIe 4X Adapter can convert the NGFF M.2 interface into PCI Express 4X interface. 2. Floppy 4 pin power connector available for stable power supply. 3. 2 Screw holes 22x60 / 22x80 available. Easy installation and no driver required. 4. with LED Voltage indicator. Support data transmission up to 4.0GB/s. 5. Support OS: Windows Vista / XP / 7 / 8, Linux, Mac. Compatible with PCI-E 1X / 4X / 8X / 16X slot. Note: M.2 NGFF to PCI-E X4 riser card, use this riser card to convert M.2 NGFF interface to ordinary PCI-E X4 interface, there are 2 fixed holes on the board, 22 respectively x 60mm, 22 x 80mm, according to the length of the slot in your machine, it can be broken and positioned. It must be noted that after the break off, our company does not support returns, you must make sure that it can be used before breaking! Type: Cable Adapter Type: NGFF M.2 M Key to PCI Express 4X Adapter Product Name: NGFF M.2 to PCI-E 4X Riser Card Features: 3.3V 12V LED Indicator Power Supply: 15Pin SATA Power Cable Compatible: with 1X 4X PCIE Slot Interface: NGFF M2 to PCIE X4 colour:White Material:PC+metal size:80 x 23mm Package Contents: 1 x M.2 to PCIe 4X Card 1 x Screwdriver 1 x Power Cable