Features MAIN USE: Read or back up T2 data and modify the serial number of T2 chipset; it is used to judge whether the data problem of T2 chip ROM makes it unable to start. APPLICABLE MODEL: This T2 chip card reader is suitable for OS X 2018‑2020 with T2 chip, please check the model carefully before purchasing to get a better fit! FAST TRANSMISSION: This T2 chip reader has many advantages such as extremely fast reading, memory storage, fast data unlocking, and efficient office work. EASY CARRYING: Comes with small size and lightweight as well, easy to store and carry the reader for convenient use. ABS MATERIAL: This chip reader is made of high-quality ABS material, which is wear-resistant, impact-resistant, and good quality, which can ensure a long service life. Specification: Item Type: T2 Chip Reader Product Mode: BY T200 Product Material: ABS Product Features: Read or backup T2 data, modify the serial number of T2 chip Applicable Model: For OS X machine with T2 chip in 2018-2020 Applicable Model: 1. For OS X Pro 13.3 15.4 16 inches For A1989 A1990 A2159 A2141 A2289 A2251 2. Suitable for OS X Air 13.3 inches For A1932 A2179 3. List of plate numbers corresponding to the machine For A2251 820-01949 For A2289 820-01987 For A2141 820-01700 For A2159 820-01598 For A1990 820-01041 For A1989 820-00850 For A1932 820-01521 For A2179 820-01958 Package List:1 x T2 Chip Reader  Package List 1 x T2 Chip Reader