Suitable for any narrow space near the computer,monitors or wall to facilitate cable insertion and unplug. Suitable for most brands of led light,router. With the design of lightweight and size,practical and exquisite.It can also be put into any portable bag and easy to storage or carry out. This adapter is 5.5x2.1mm 4.0x1.7mm 3.5x1.35mm 2.5x0.7mm male to USB female port Fine workmanship,close,stable transmission,rust.