The GCS634U is a simple way to simultaneously run and share audio among four computers with a single monitor, USB keyboard, and mouse. This bus powered KVM switch features USB sniffing technology to ensure instantaneous recognition of the mouse and keyboard when switching computers. The patented VSE (Video Signal Enhancement) technology provides resolutions up to 2048 x 1536 @ 60Hz. The MiniView provides audio support allowing you to share your multimedia speakers among the connected computers. Hot key enables independent switching of Audio and control functions - Listen to music from one computer while working on another. This switch also offers multi-platform support directly for MAC and PC keyboard and by PC keyboard emulation of Sun specific keys. Simply set the individual port to match the connected computer. Included with the GCS634 Plus bundle, is the programmable 5-Button USB Laser Mouse, its 1600 dpi resolution makes it excellent tool for graphic designers, gamers, and desktop users. This unique feature of this mouse is its use of VCSEL technology (Vertical Cavity Surface Emitting Laser) as the light source providing 30x more tracking power over regular optical mice, meaning the GME521 will work on virtually any surface.