Currently there are two types of notch designs for the M.2 SSD:
1. B key design
2. M key design
Transcend's PCIe M.2 SSDs utilizes the M key design, and are thus only compatible with Host platforms with M notches.
In a situation where the user wrongly inserts a PCIe M.2 SSD with M key to a platform that only supports B key by flipping the M Key SSD over, the SSD will become burnt in no time.
Note: For a platform with notch B, please choose a compatible SATA III M.2 SSD product.