The st128utpea is the 8 port extender transmitter unit utilized by startechcom utpea vga and audio over cat 5 extension series this convenient video distribution system simplifies implementing digital signage solutions by allowing a single vga source and corresponding audio to be broadcast to multiple displays at up to 300m 950ft away comprised of a 4 port vga audio extender unit st124utpea or this 8 port vga audio extender unit and one stutpealr receiver unit or stutprxwla wall pl