The expansion dock is plug and play for convenient use. It supports simultaneous use of three ports. Equipped with USB 2.0 technology and a reinforced interface, it ensures anti-interference, fast, and stable signal transmission. Made from ABS material, the expansion dock is durable and lightweight. With compact dimensions of approximately 5.5 cm x 3 cm x 1.9 cm (2.17" x 1.18" x 0.75"), it is portable and easy to carry. Compatible with laptops, keyboards, card readers, and other USB-enabled devices. Item Name: Expansion Dock Material: ABS Color: Black, White Interface Type: 3 x USB 2.0 Transmission Speed: 480 Mbps Downward Compatibility: USB 1.0, USB 1.1 Features: Fast transmission, stable output, compact design Note: Due to differences in lighting and screen settings, the item color may vary slightly from the images. Slight dimensional variations may occur due to manual measurement. Package Includes: 1 x Expansion Dock (other items not included)