CONDITION: New Open box Power adapters not including easy to source dc 9v-12v/1A. I will do my best to answer you quickly.
eBay
This Vanco 280504 VGA over Cat5e/Cat6 extender is a high-quality accessory that allows you to extend the length of your VGA cable by up to 500 ft. It is compatible with the Vanco 280544 model and features a Cat 5e connector on one end and a VGA connector on the other.
eBay
StarTech ST121UTP VGA Over Cat5 Video Extender Item comes as is in photos Item is new
eBay
Specifications:Type: VGA Extender to RJ45 AdapterSize: 52*33*16mm/ 2.05*1.3*0.63 inchNumber of Pin: 15Number of Row: 3Thread: M3Color: Gray Features:Use this DB15 to RJ45 adapter to convert any standard 15-pin DB port to a standard RJ45 port.Save the cost and hassle of buying a new cable by just changing the port type and using the cable you already have.This converter is made of ABS & metal, grip treads for easy plugging and unplugging, and finger-tightened screws for a secure connection. Package Includes:1 X VGA to RJ45 Adapter.
eBay
15pin VGA Male/female to RJ45 Female Connector Card. Connects VGA male to RJ45 male. 1xVGA to RJ45 Adapter. Transmit signals between your VGA video ports over CATS, CAT5E, and CAT5 network cables. Transmits signals up to 100 FT.
eBay
Verwenden Sie kein Crossover-Netzwerkkabel. Keine externe Stromversorgung erforderlich. 15-poliger HD-15-Stecker / Buchse an RJ45. 1 VGA-Stecker auf RJ45-Netzwerkkabeladapter. Der Abstand liegt bei Verwendung dieses Adapters innerhalb von 20 m (ca. 66 ft).
eBay
VGA Over CAT5e/6 Extension up to 60m. 2X VGA Signal Extender 60M. -Connector: RJ45, VGA. -Use CAT-5e/ 6 replaces VGA wire. -Support IEEE-568B standard. -Support all kinds of computer system. -Small, lightweight, no power and driver required, easy installation and flexible in wiring.
eBay
Supports resolutions up to 1920×1080 at 60 Hz, ensuring crisp and stable video performance over extended distances without experiencing snow or flickering.
eBay