Personal computer interface cable with software RS-232 Serial port Alarms lock's own windows-format software for easy programming, scheduling and log viewing. IBM PC or compatible desktop or notebook computer with 233 MHz or faster processor. At least 10 Mb available on hard drive At least 64 MB of RAM memory Microsoft Windows 95, 98, NT4.0 or higher DL-Windows One unused RS-232 Serial Communications port (Com 14). USB Adapter not included.