First of all, it is no longer necessary to distinguish between interfaces, no matter one or two notches, it can be inserted and used. Secondly, 99% of the M.2 SSDs on the market are and NVME protocols (AHCI accounts for a small percentage), all of which support reading and writing. From now on, there be no distinction between protocols. No matter which specification, no matter which interface, no matter which protocol, it can be used. This is the only adapter you need for multiple SSDs.<br><br>For NVME/NGFF to USB3.1 type-A/C 2-in-1 Adapter Card Support NVME protocol, NGFF protocol M.2 SSD. Do not support PCI-E AHCI protocol M.2 SSD. Regarding how the AHCI protocol is differentiated: , the PCI-E AHCI protocol is for SSDs manufactured before 2015. Secondly there be a label on the SSD stating, for example, the words "PCI-E AHCI". Chip: JMS581DL Support for almost 99% of the current market M.2 SSD (only PCI-E AHCI protocol does not support) External Interface: USB3.1 Type-A direct plug interface form factor can be used cable-free Downward compatible USB3.0 USB2.0 interface (support USB2.0 and 3.0 interface) Of course, connect 2.0 to run 2.0, connect 3.0 to run 3.0 speed. Read Speed: 1000MB/s (This data is for reference only) The actual reading speed is mainly related to the SSD and the device, different SSDs and the same device test, the test results are not the same! Adapter size:11x2.3cm Color:As Shown Material:PC<br><br>Package Contents: 1 * Adapter card 1 * Heat dissipation silicone patch 1 * Screw 1 * Screwdriver<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.