Function: the 13 piece hollow plug with adjustable tip is a combination of the 5.5 x 2.1 mm universal power supply. You can charge laptops from different outlets even if you only have a single power supply. USB DC cable is used to charge 1A ~ 3A; the DC plug is suitable for voltages below 36V, maximum current 5A.Materials: it is equipped with a USB 2.0 A to DC (24AWG) charging cable. The DC connection is made of high quality stainless steel and is gold plated. The USB interface is nickel-plated, wear-resistant, durable and antioxidant.Cut: All DC sockets have the standard dimensions: 5.5 x 2.1 mm. The parameters of each tip are all listed in the . They are suitable for almost all laptops. Very full. Please check if you need this before purchasing.Compatibility: DC USB cable is suitable for devices with 5.5 x 2.1 mm DC socket, e.g. Router, camera, car recorder, desk lamp, TV box, speaker, LED display, USB fan, etc. This DC connection kit is compatible with laptops, external power supply and integrated transformer. For example, compatible with , compatible with , compatible with , compatible with , compatible with , Acer etc.13 hollow plugs included: Type-C, -USB, Mini USB, 5.5 x 2.1 mm, 5.5 x 2.5 mm, 5.5 x 1.7 mm, 4.8 x 1.7 mm, 4.0 x 1.35 mm, 4.0 x 1.7 mm. 3.5 x 1.35 mm, 3.0 x 1.1 mm, 2.5 x 0.7 mm, square DC, easy to use, every family needs such a set.Type:Cable Adaptercolor:BlackMaterial:Plastic + MetalPackage Contents:1 x USB to DC Power Cable13 x Laptop Only the above package content, other products are not included.Note: Light 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.