The KUSB-488B from Keithley is an IEEE-488.2 USB to GPIB interface adapter for USB port. This high speed tool can control 14 GPIB instruments or other devices over a distance of up to 20meters. The model KUSB-488B turns any computer with USB port into a fully functional GPIB controller. Its small form factor makes it perfect for use with laptop computers in portable applications or for other applications in which computer has no PCI plug-in board slots. The product is USB 2.0 compliant and has an IEEE data transfer rate upwards of 1.5MB/s through USB port. No external power is required.