The USB 2.0 to VGA Adapter allows the user to mirror or extend their current PC or laptop desktop across another monitor up to resolutions of 1680 x 1050 @ 32 bits on a VGA/SVGA monitor. You can use up to 6 displays on one computer with a minimum specification of Intel/AMD Dual Core 1.8Ghz with 1GB or more memory.A single display can be run on as little as a single core 1.2Ghz computer with 512MB of memory.