TBers, I find myself in need of the following AC to DC transformer for an old rack-mount tuner: Output: 9 volt DC, 300mA, 4.5mm plug, center negative AC prongs need to be "sideways". That is, the wall wart needs to hang horizontally rather than vertically. The reason is that the wart needs to occupy only one rack space vertically. Plenty of room horizontally. Any suggestions would be appreciated. Perhaps some of you have travelled this path before.