Feature:1. Support SSD: Adapter card supports 2230, 2242 length SSD. Supports NGFF M.2 MKEY NVME SDD. Does not support NGFF M.2 BKEY SATA SSD.2. Support System: Support for OS X for Mojave, for Catalina or higher version for OS X system, the system has integrated NVME driver.3. Supported Equipment: NGFF M.2 MKey NVME support for 2016 2017 for IOS Laptop PRO A1708, easy to use and fast, stable performance.4. PCB Material: NGFF M.2 MKey NVME is made of PCB material and does not support systems lower than for OS X 10.14, and the system does not integrate NVME drivers.5. Alternative: SSD riser card to replace broken, damaged, cracked, unusable conversion cards, lightweight and portable, easy to carry and use.Specification:Item Type: M.2 NVME Riser CardMaterial: PCBPurpose: For 2016 2017 for IOS Laptop PRO A1708 SSD to NGFF M.2 MKey NVME.Package List:1 x Riser Card1 x Screw1 x Stud1 x ScrewdriverNote:Frequently asked questions: the hard drive is not installed in the system before the boot by option button is not visible hard drive, choose NGFF M2 MKEY NVME SSDI, please try to use a large brand, good compatibility, stable use, long life;