ITEM NAME:7.9x5.5mm DC Power Supply Converter Adapter Cord For Lenovo Thinkpad Description: Thinkpad round Jack 7.9*5.5 to Lenovo square Jack with conversion line Two cores, good workmanship Thick core, square pin connector, IC chip Suitable for transferring IBM laptop power interface to Lenovo notebook Specification: Material: Plastic Line length: about 155mm Package Includes: 1xRound Jack to Square End Adapter Cable SKU: ALU0015154263012610.Thinkpad round Jack 7.9 5.5 to Lenovo square Jack with conversion line. Suitable for transferring IBM laptop power interface to Lenovo notebook. 1xRound Jack to Square End Adapter Cable. Line length: about 155mm.