I was bedridden with very limited mobility for weeks after surgery. My hospital bed was in the same room as my main computer, but I couldn't get there. This cable allowed me to extend my current keyboard and trackball to a lap table on my hospital bed and freely use my computer. (There was also a DVI monitor extender to attach the monitor to a bed mount.) This was important because I could use my computer during rehab to stay connected, do a little work on a few projects, and To have fun. while I lay in bed.