About this item Design: Dongle Tip Adapter Converter Cable female 7.4mm to 4.5mm smart round tip with pin for laptop Charger compatibility. Specification: Tip Converter Cable for Chargers Female 7.4mm x 5.0mm (for older models with big tip with pin) to New Smart round tip with pin 4.5mm x 3.0mm male tip, about 30cm length. Useful: Reuse your old laptop chargers with 7.4mm x 5.0mm tip for your new device which uses the new smart round tip, save your money, lightweight and compact, suitable for office and business travel to carry. Compatible with various laptop models, including those from series 3000 and other compatible designs. You Will Get: 2pcs Tip converter cables with 4.5mm tip output. Dimensions: 7.87 x 0.47 x 0.47 inches.