This is designed for 2021 M1 Macbook Pro 14" and 16" What exactly is a Ninja Stealth Drive? It's an aluminum micro SD card adapter that fits 100% within your Macbook without any awkward protrusions. You can place a micro SD card into this adapter and gain up to 2TB (SD Spec.) of extra storage space for your computer. For example, if you place a micro SD card into your Ninja Stealth Drive, then you will get extra disk space on your Macbook. The read and write speed for each brand of micro SD card varies, you can pick your favorite brand and use it with your Ninja Stealth Drive. Nice isn't it? Your computer now has extra storage space! (If you use a 512GB micro SD card, then you will get 512GB of extra space!) Applicable models * 2021 Macbook Pro 14" (A2442) Model Identifier: MacBookPro18,3, MacBookPro18,4 Part Numbers: MKGP3xx/A, MKGQ3xx/A, MKGR3xx/A, MKGT3xx/A * 2021 Macbook Pro 16" (A2485) Model Identifier: MacBookPro18,1, MacBookPro18,2 Part Numbers: MK183xx/A, MK193xx/A, MK1A3xx/A, MK1E3xx/A, MK1F3xx/A, MK1H3xx/A *We also provide HDMI dust plug (aluminum) options for your choice!