APIB USB ADAPTER for AP S1, S2 & S2c is used to run the Audio Precision Systems using ApWin 2.24 with modern computers. This also runs ATS2 using 1.5 software. The OS of XP, Vista, Win 7,8 & 10 through USB (No ISA, PCI or PCIMCIA CARD is needed). The CD included and filled with all files needed and other helpfull programs. Made in USA. 

Anyone who buys a Audio Precision System One, Two, Cascade or ATS2 will need a computer interface to run the AP. New computers don’t support ISA, PCI, PCIE cards and the APIB USB ADAPTER is the device you need.