There is a drain hole at the bottom, which makes the switch waterproof and damp-proof. Adopting streamline arc design, it is comfortable to use. It adopts dual USB transmission ports, which supports mobile phone charging, keyboard, mouse and headset functions. Made of ABS high quality material, it is solid and durable. The length of the product is 10.5cm, the width is 9.5cm and the height is 2.7cm. The total length of the extension cable is 1.6m. The wiring installation of the PCI expansion slot is convenient. It is suitable for household, office, hotel, internet bar, etc. Item Name: Computer Case Power Switch Material: ABS Style: Normal Model (without USB Port), USB Model (with Two USB Ports) Suitable Occasion: Household, Office, Hotel, Internet Bar, etc Features: Waterproof, Damp-proof, Easy Installation Size Details: 10.5cm x 9.5cm x 2.7cm/4.13" x 3.74" x 1.06" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Note that USB port is only a power supply and can not transfer data. Application: 1. Internet bar: Using the desktop mobile switch, you can lock the computer chassis by pressing the power/restart button on the desktop mobile switch. 2. Home: You can use the left mobile key to save without spending a lot of effort to repair the chassis. Package Includes: 1 x Computer Case Power Switch (Chassis Connection Cable Included) 1 x Metal Card Slot Bar