Update 4 packs : You get 2pieces of USB-C to USB-A adapter and 2 pieces USB-A to USB-C adapter (Total 4 PACK) compatible devices Apple/Samsung/Google/laptop/desktop computer/charging head/card reader/USB disk/keyboard/mouse/charging bank/car charger,. 2PACK USB to USB C Adapter Compatible :This usb male to usb c female adapter support USB 3.0,offers data transfer speed of 400-500 MB/S (5Gbps),and up to 2.4 Amp of output current,supports a stable charging speed,up to 5V/3A,9V/2A,Compatible with iPhone 14 13 12 11 Mini Pro Max,Samsung Galaxy s23 s22 21, s20+ S20Ultra A14 A13 A53 ,Google Chrome book, Pixel 7 6,Apple Macbook Ipad Pro 2018/2020/2021 and also can plug in USB A charger block when you had only usb C to usb c cables,. 2PACK USB C to USB Adapter Compatible :This usb c adapter support USB 3.0,offers data transfer speed of 500 MB/S (5Gbps),and up to 3 Amp of output current.Compatible with MacBook Pro 2021/2020/2019/2018/2017/2016, MacBook 2018/2017/2016/2015, iPad Pro 2020/2018, Pixelbook, Galaxy Book, Pixelbook, Dell XPS 15 / XPS 13, Surface Book 2, Samsung Galaxy S8/S9/S10/S7/S6and many other smartphones/laptops/tablets,and also can plug in usb c charger block when you had only usb a to usb c cables,. Easy to Use and Carry USB Adapter : Plug and play, no driver required; Simple structure, lightweight and portability. and built-in Double sided 56KO resistor in this USB C to USB adapter&USB to USB C adapter are made of aluminum alloy metal with minimal design and delicate metal frame, which ensures charging and data transferring safe,Small size, grab-and-go, ready to use for anytime. Convenient for your daily use. Quality Reliable : Engineered for enhanced durability, durable aluminum alloy shell material, get excellent wear resistance and heat dissipation, the female USB A and male USB C connectors & the male USB and female USB C connectors are designed to be plugged and unplugged up to 20000 times, all of them spuport for device fast charging and data transfer, memory space expansion, and additional computer peripherals.