Feature:1. Using a cooling fan can effectively reduce hard disk problems, and can drop by about 202. This product also has other features, such as no additional power support, very convenient.3. Easy to install, plug and play, no need to drive the card by yourself, very convenient and practical.4. The operating temperature is lower, which makes your hard drive faster.5. This adapter card only supports 2280 size PCI-E x2 x4 AHCI and NVMe protocol M.2 NGFF hard disk, absolutely does not support SATA protocol.6. This adapter card has a PCIE x4 interface, which can be inserted into the PCIe x16 x8 and PCIe x4 slots of the computer, but the speed is still PCI-E x4 speed.7. This product is compatible with PCIe 4.0 3.0 2.0 1.0, but the interface bandwidth and speed are different.Specification:Item Type: Adapter CardInterface: PCI-E X4Hard Disk: NVMe M.2 NGFF 2280 SSDNote: 1. Whether it can be used as a system disk is related to your motherboard, not the adapter card. Usually, the motherboard using DDR4 memory can support NVME protocol hard disk as a boot disk. Some old motherboards can also realize NVME hard disk startup by flashing the BIOS.2. Regarding Optane, this store does not provide technical support. The use of Optane is conditional. This riser card is actually a few wires connected from the hard disk drive to the PCI-E slot of the motherboard. You only need to change the shape of the interface without any chips. This is equivalent to the function of a cable.3. This adapter card converts PCI-E x4 or PCI-E x2 interface protocol M.2 NGFF SSD to PCI-E x1 interface on the desktop motherboard. It is mainly used for batch test firmware upgrades of SSD, or some motherboards used urgently when the PCI-E x4 interface is insufficient. Note: The SSD with this adapter card cannot run at full speed! Try to insert the motherboard's PCI-E 3.0 4.0 slot, if it is inserted into the PCI-E 2.0 or PCI-E 1.0 slot, the speed is very slow4. If your motherboard chipset is lower than the 9 series, the NVMe hard disk does not support the system startup disk, only the data storage disk, unless you change and refresh the motherboard BIOS! It is not that your motherboard has a PCI-E interface to use a PCI-E interface SSD. The key depends on whether your motherboard BIOS can support a PCI-E interface SSD! Under normal circumstances, chipsets lower than the 9 series certainly do not support PCI-E interface SSD to start!5. Please correctly insert the adapter card into the PCI-E interface of the motherboard instead of the PCI interface. If inserted incorrectly, the adapter card and motherboard may be burned! If there are burnt marks on the golden fingers on the board, this store will not refund it, it must be caused by the wrong location!5. You must use the original for win 10 installation disk to install the system. For Win7 systems and PE systems do not support NVE protocol SSD because they do not have NVME drivers. The boot cannot be detected in the BIOS, but press the boot menu selection key (for example, F3 for ASUS, F12 for Gigabyte, F11 for ASRock, etc., depending on whether your motherboard is yo or manual) drive, which means yes, you can Perform system operations step by step.6. M.2 NGFF interface SSD has many pin definitions, according to the position of the key, it can be divided into ABC...up to the M key; according to the size, it is divided into 2230, 2242, 2260, 2280, 22110 specifications; according to the data transmission protocol , Can be divided into B + M key SATA data transmission protocol, B + M key PCI-E x2 AHCI data transmission protocol, B + M key PCI-E x2 NVMe data transmission protocol, M key PCI-E x4 AHCI data transmission protocol, M key PCI-E x4 NVMe data Transmission protocol; again, this product only supports PCI-E x4 AHCI NVMe transmission protocol SSD in the M.2 NGFF interface (SSD have only one gap), while PCI-E x2 AHCI NVMe transmission protocol SSD (such SSD) have two Two interfaces, but the transmission protocol is PCI-E X2, such as Plextor's M6E series. Make sure to distinguish between the two gap and SATA transfer protocols. Be sure to consult the official customer service of your SSD to learn about hard drives. Transmission protocol, if you buy the wrong protocol, you cannot use it) .Package List:1 x Adapter Card1 x Short BaffleNote:Please note that the fan of this product will be shipped randomly, please make sure you don't mind before ordering.