Adapter works good with SSD Kingston A2000 1TB and MB MSI B450-A PRO MAX. Adapter mount in PCI_E4 slot. Speed is the same as M.2 slot on MB (disk SSD Kingston A2000 250GB). I didn't try to boot system on disk mount in this adapter, but i think it could works. RGB Led is OK, but every single Led is visible on diffuser.
I didn't connected LED to MB Mystic Light connector, because cable is too short, so now it's working autonomously, and colour on adapter is different to another LEDs in my computer case. Ultimately it will be synchronized.
This product kill my motherboard sound card so i request to store manager similar case to get some information to share with motherboard c/s, but there is no answer about that. Consumers have to endure terrible after-sales support.