RS-232 to a computer with a USB 2.0 or 3.0 Type A port. OS Compatibility Windows 10/8/7/Vista/XP//2000 (Windows 7,8,10,11 should auto detect and install the drivers) macOS 10.6 and above (Both computer and device must support macOS) Linux kernels 2.4.31 and later Check the DB9 port on your device Devices with fixed hex screws may require a DB9 Mini Gender changer or serial cable with adjustable screws (sold separately). A Null Modem Adapter (sold separately) is required to directly connect two computers Important Note This is NOT a VGA cable call/WhatsApp