Asus N551JK

Fig. 1

Fig. 2

Fig. 3

Asus N551JK onboard RAM disable

Problem

Solution

Disabling onboard RAM for Asus N551JK

I used N551JK Rev: 2.1 boardview for this guide. We need this mod when suspect about onboard RAM chips. All onboard RAM chips must be removed. If client requires the onboard RAM, replace the RAM chips and shift back the resistors. Search in Nets box for "PCB_ID" string. This will list all RAM configuration lines, PCB_ID0-1. Initial RAM configuration is 00; RAM slot plus onboard RAM available. See Fig.1. Locate PCB_ID0 and corresponding resistors. Shift R2312 to R2311. See Fig. 2. Locate PCB_ID1 and corresponding resistors. Shift R2314 to R2313. See Fig. 3. The final RAM configuration will be 11; only RAM slot available.