Feature:1. All female sockets are 5.5x2.1mm, and the tip of each connector can be inserted into a 5.5x2.1mm male connector, such as a laptop power supply and AC adapter.2. Widely compatible for Lenovo, for ThinkPad, for Dell, for and other notebook computers. It can be adapted to balance bikes, scooters, wheelchairs, lawn mowers and other household appliances.3. 28pcs universal DC plug power converters, can be used with external laptop DC power batteries or laptop universal AC power adapters to charge portable PCs.4. DC plug power converter for external power supply and on‑board transformer, practical to use.5. Compact size, lightweight and portable, which is easy to carry and convenient for using.Specification:Condition: 100% Brand NewItem Type: Power Converter Material: ABSColor: As picture shownFemale Socket: DC 5.5x2.1 standard interface28pcs universal 5.5 x 2.1mm/0.2 x 0.1in DC AC power adapterIncluding:1 x 7.9 x 5.5mm/0.3 x 0.2in-yellow-for IBM Thinkpad1 x 7.4 x 5.0mm/0.3 x 0.2in-black-suitable for Dell, for Pavilion1 x 3 Hole for Dell nib-black-for Dell1 x 5.5 x 1.9mm/0.2 x 0.1in DC-black-for ASUS1 x 6.0 x 1.4mm/0.24 x 0.06in core pin-black-suitable for Samsung, for Fujitsu, for Sony1 x 6.3 x 3.0mm/0.25 x 0.01in tuning fork-green-suitable for Toshiba, for Lenovo1 x 5.5 x 2.5mm/0.22 x 0.1in DC-white-suitable for Lenovo, for Asus, for Acer, for MSI, for BenQ, for Toshiba, for IBM, for Gateway, for Haier1 x 5.5 x 2.5mm/0.22 x 0.1in tuning fork-black-suitable for ASUS, for Toshiba, for HP, for MSI, for IBM, for Lenovo1 x 5.5 x 2.1mm/0.22 x 0.08in DC-blue-for Acer, for Toshiba, for HP1 x 5.5 x 2.1mm/0.22 x 0.08in tuning fork-black