Tobo he number pad for laptop integrated ergonomic tilt provides support to help prevent wrist strain, ideal for those working on spreadsheets, accounting files or financial applications.USB 2.0 Wired technology, Plug and Play, no device drivers, signal transmission stability, no delay number pad, TPE - protecting cord, the maximum working 75cm.Works with PC and desktop computers that have Mac Os, Windows XP / Vista / 7 / 8 / 10 operating systems.Plug and play, USB connection, no device drivers, is an ideal choice for spreadsheet accounting and financial applications.Professional 18 full-size and concave 10 keys design, applicated in sock, notebook computer, banking, school, company etc.