This product pass FCC and CE Certification. Full refund within 30 days for whatever reasons. No Questions Ask! 18-month warranty, covering all quality problems – we’ll offer you a free replacement or full refund. Included Accessories: 12cm Regular Profile Bracket, 8cm Low Profile Bracket, Installation kits (Thermal Pad, M.2 Screw, SSD Standoff and Screw Driver, 2 x Rubber bands, 2 x Metal clips). Aluminum M.2 Heatsink: 5°C- 20°C cooling effect (Varies depending on the environment) keeps M.2 PCIe SSD under good performance even full-load operation. OS compatibility: Plug and play in Windows 11/10/8/Linux/Mac OS. (Noted: Windows 7 do not have native NVMe driver, so can not support M.2 PCIe SSD). M.2 PCIe SSD as Storage Disk: Brand new M.2 PCIe SSD need to be Initialized and formated before PC host recognize it. Support OS booting from PCIe SSD: Need to reinstall OS, and setup BIOS/UEFI booting from this M.2 PCIe SSD. (Noted: Some motherboards too old to setup OS booting from M.2 PCIe SSD. Additionally, Windows 7 may not support OS booting from M.2 PCIe SSD. In this case M.2 PCIe SSD can be used as storage disk). Work with PCIe 4.0/3.0 M.2 SSD, not Support M.2 NGFF SATA SSD: To reach PCIe 4.0 X4 (64Gbps) full speed, CPU and motherboard PCIe slot and M.2 PCIe SSD should all be PCIe 4.0 feature. (Noted: Intel 11th Gen and above CPU support PCIe 4.0). No Capacity Limitation: Support 2T/4T capacity M.2 PCIe (NVMe/AHCI) SSD, Support 2230/2242/2260/2280 size. M.2 PCIe SSD Full Speed Adapter: With this PCIe X4 adapter, M.2 PCIe SSD can operate at PCIe X4 full speed. It's like being installed directly on the motherboard, and the speed is basically unaffected.