" & ) display if no device was detected EndIf $a = usb _device ( ) ConsoleWrite ( "usb device: " & $a & ) usb device retrieve by usb_device function $us =usb _open ( $a ) open te device by usb_device ConsoleWrite ( "usb open:" & $us & ) *******************************open / close***************************************** DllClose ( "libusb0. The ConFiG SoftRock tool (CFGSR.exe) can be used to configure the SoftRock USB Si570 firmware.This firmware is the official supplied firmware in the SoftRock SDR kits of Tony Parks that are using a Si570 chip from Silicon Laboratories (SiLabs).