I have a laptop (Inspiron 15 3521 i5) which has 1x hynix 4gb ddr3l ram ,if i buy another hynix 4gb ddr3l ram with same specs and same serial number will i be able to get dual channel mode to work?
Sorry for my bad English
1| If and when performing a ram upgrade it's best you buy a kit as opposed to buying a stick of ram that seems to be identical.
2| Prior to dropping in your ram kit, it's highly advised to update your BIOS to the latest revision.
3| Is it possible to pass on a picture of your existing stick of ram and an SKU to your laptop?