This is a Thunderbolt docking station that can accommodate an M.2 SSD. It supports ultra-fast 40Gbps transfer speeds, making it ideal for expanding the storage capacity of MacBooks and other devices. Also, it's a very compact size for a Thunderbolt dock, so it doesn't take up much space. The port configuration is as follows: ・Thunderbolt upstream × 1 ・Thunderbolt downstream × 1 ・USB-A (USB 3.0) × 1 ・DisplayPort × 1 ・USB-C (for USB PD power supply) × 1 Other notes are in the profile. Instant purchase is welcome.