Notes: 1.The distance is within 20m ( 66ft) when use this adapter. 2.The adaptor can't be used via a switch, router or hub. 3.'t use crossover network cable. 4.The distance and picture quality depends on length of the cable, and the resolution that you'd like to transmit.And you had better use the copper, shielded cables. Colour: Black Material: PC + metal Package Contents: 2xVGA Male To RJ45 Network Cable Adapter Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. Allow transmitting signal between VGA video ports for distances up to 66ft (approximately 20 meters) over CAT5, CAT6 ethernet cable (cable not included). This adapter will allow you to connect your PC, laptop, DVR, Media Center, or Game console VGA video port to TV, Projector, Monitor with available VGA input for ultimate multimedia experience. A perfect solution for your media center PC to your HDTV.'t require external power.15-pin HD-15 Male/Female to RJ45 The distance and picture quality depends on length of the cable, and the resolution that you'd like to transmit. Make that the your connection works over regular VGA cable, You CAN use VGA switches, splitters, and amplifiers.