NICE Rotronic Professional Measurement Monitoring Software CD ROM # HW4 v. 3.8.0 \ NOTE this is not for water activity. Nice good condition. Overstock. Ready for you to use. Sitting on factory shelf for many years and needs to be put to use by you!!! FROM Manufacture- PC Requirements Processor: Pentium II, 450 MHz RAM: 128 MB Available hard disk space: 50 MB Monitor: SVGA, 1024 x 768, 256 colors Ports: one free serial (COM) port or one free USB port or Network Interface Card (Ethernet) Operating System Windows XP, NT4 with SP 6a or higher, Vista / Windows 2000 with SP 2 or higher Windows Server 2003 Microsoft .NET framework v 2 or higher ROTRONIC USB driver (when using a USB port to connect devices) HW4 v 2.1.0 or higher is required by the AirChip 3000 instruments and probes such as the HP21 indicator Disclaimer - Seller not responsible for issues that arise from the buyer buying this. Will offer 14 money back if buyer not happy. Will ship international. FREE USA SHIPPING please ask questions. Please look at pictures.