The HID controller (Human Interface Devices), written by Robert Marquardt, is a component suite, which gives complete access to HID devices. Handles all devices which are in the HID subclass of USB. You will also find nice Delphi tricks like a private constructor. Compatible with Delphi 4 to 6 and BCB (tested with BCB 6 Trial). Runs on all Windows versions from Windows 95 on. Even on Windows 95 and Windows NT which have no USB support. It only never finds HID devices there.