Description/Features: 1. This product is designed to cool the original NS2 Dock. 2. Equipped with a USB A port, it supports power input from the original NS2 Dock and output from a USB expansion port. 3. Connect the product to the original NS2 Dock to provide power input. 4. This product has a fan switch with settings from OFF (off), 1 (low speed), to 2 (high speed). Flipping the switch to 1 or 2 turns on the fan to cool the dock. Flipping the switch to OFF turns off the fan. 5. This product has a USB A expansion port for charging peripherals and data transfer. 6. USB input: 5V-1.5A 7. USB output: 5V-1.0A Specification: Due to different batches, there may be differences in product appearance, color, and printed text, which not affect the use. Color: Black Material: ABS Package Contents: 1*Cooling Fan Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.