Asus EB1505 - Manual (Page 21)

EB1505 PC 21
English
2. At the rear your PC, remove the screw from the middle-right
section. Keep the screw for future use.
Stand screw
3. Place your PC on the VESA mount noting the correct alignment,
and then secure your PC to the VESA mount with the bundled
screws. The stand screw (the same one used for securing the
stand to the PC) goes to the bottom hole. The flat-head screw
goes to the hole on the right.