More information on Toshiba laptop memory upgrade:

If you are looking for a memory upgrade for your Toshiba Tecra M4 Series M4 (PTM42U-01802J) laptop you've come to the right place!

We, at MemoryC, supply Toshiba Tecra M4 Series M4 (PTM42U-01802J) laptop memory upgrades. Upgrading your Toshiba Tecra M4 Series laptop memory will give you an additional performance boost and make memory intensive applications work smoother. Our recommendation is to add the largest memory upgrade to your laptop to achieve the best performance. Using our Toshiba Tecra M4 Series laptop memory configurator to find the right type of laptop memory you need takes the stress out of this selection, as we only sell premium laptop memory upgrades.

All Toshiba Tecra M4 Series M4 (PTM42U-01802J) laptop memory is guaranteed compatible (pretested in your particular laptop system), covered by lifetime warranty and will improve the performance!