A monitor splitter cable is used to connect PC or laptops with same CPU or processing unit to multiple video displays (monitor) or projector units. It is used extensively to connect laptops to monitors of larger size and resolution.
Following are some of the best preferred ones:
Video Splitter – VGA (HD15) M to VGA (HD15) F X 2 (1 PC to 2 Monitors) by MP electronics: It Works well with both SVGA and VGA. It is tested at 1920X1440 pixel resolution at a refresh rate of 75Hz and works completely fine. However it can also be used for higher resolutions.
It costs around 6 dollars.
Tripp Lite P516-001 VGA/XVGA Monitor Y Splitter HD15M/2XF: With wire length of 1 foot this is good for small distance only. However the short wire also means a low delay display. Tripp Lite offers Lifetime Warranty on this product. It costs around 14 dollars but may fall till about 8 dollars during discounts.
PTC Premium GOLD Series VGA / SVGA 1 source to 2 displays Splitter cable: With a UL Listed Double Shielded cable to eliminate interferences this Gold-plated connectors ensure superior signal transfer and a lifetime of maximum performance. They also have Thick gauge wires to support high video resolutions. It costs around 5 dollars.
Cables To Go 29551 2,4-Port UXGA Monitor Extender (Male Input) : Comes with two models- 2,4 port monitor splitter. It also has a 1 year warranty.
However the cost is on the higher side with the 2 port splitter costing upto 60 dollars and the 4 port splitter costing 80 dollars. These also come with about 20-30% discount offers at times.