| Memory upgrade option | Monthly |
|---|
| From 2Gb to 4Gb (For Model DS/MS3xxx) | S$10.00 |
| From 4Gb to 8Gb (For Model DS/MS3xxx) | S$30.00 |
| From 4Gb to 8Gb (For Model DS5xxx) | S$60.00 |
| From 8Gb to 16Gb (For Model DS/MS 4/8xxx) | S$100.00 |
| From 16Gb to 32Gb (For Model DS/MS 6xxx) | S$200.00 |