old driver+utility to drive LS-120 (Superdisk - ********** Kotobuki E. - MKE). For DOS!!, Win 3.1, Win3.11 and Win95. Under Win98 OK - you tested (?)
Read file Readme (Drivers) for installation under DOS. For user only Windows95 to WinME can may download latest driver (1999y) MKELS120.VxD ver1.54 from this site driverguide.com or from www.panasonic.com (old products site).