Acer Aspire One d55 Current password

mi hermano me vendio una pc y no se la contrasena. me pide el current password.
intente encontrar el jumper en el motherboard pero no lo encontre.
alguno sabe donde se encuentra el jumper???

encontre esto en la internet , pero en el paso tres me pierdo!!

Steps for Clearing BIOS Password CheckIf users set BIOS Password (Supervisor Password and/or User Password) for a security reason, BIOS will askthe password during systems POST or when systems enter to BIOS Setup menu. However, once it isnecessary to bypass the password check, users need to short the HW Gap to clear the password by thefollowing steps:

1. Power Off the system, and remove HDD, AC and Battery from the machine.
2. Disconnect the RTC Battery cable and locate the CMOS jumper in the DIMM bay.
3. Use an electric conductivity tool to short the two points of the HW Gap.
4. Plug in AC, keep the short condition on the HW Gap, and press Power Button to power on the system till BIOSPOST finish. Then remove the tool from the HW Gap.
5. Restart system. Press F2 key to enter BIOS Setup menu.
6. If there is no Password request, BIOS Password is cleared. Otherwise, please follow the steps and try again.NOTE: These steps are only for clearing BIOS Password (Supervisor Password and User Password).