54810A, 54815A, 54820A, 54825A. This is the Windows-98 based bootable OS and oscilloscope software hard drive for Agilent Infiniium / HP Infinium 54810, 54820 series oscilloscopes I reserve the right to send you a larger/smaller hard drive with a different part# or even on a SSD drive (the latest version will be loaded if the drive isn't the one pictured).
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