Left and Right V3 V-Lifters: the V3 V-lifter quickly and easily alternates the slope of the keyboard from 5, 10 & 15 degrees positioning your forearms and wrists in a more comfortable position by reducing pronation.Unlike the VIP the V3 does not require the installation of palm supports prior to use.Use with or without the pivot/tether. The pivot tether connects the two keying modules of the Solo keyboard together. Disconnect the pivot tether if greater separation is required.Provides a highly stable typing platform with no bounce.USB PC