Make your Dell&132;&162; system a champion by upgrading with memory specifically engineered & tested for your system. At Dell we focus on quality parts & rigorous testing so that your system can tackle the challenges faced by high-end operating systems & multimedia applications. With Dell Memory we also offer a limited lifetime warranty & the benefits of Dell&153;s service & support. Trust only Dell Memory for your next Dell system upgrade!\n\n Dell&132;&162; Branded memory offered in the Memory Selector is fully compatible & supported by Dell. Memory offered now may differ in speed from the original system memory but has been qualified to work in the system. When mixed, the memory will perform at the lowest speed populated or the highest speed allowed by the system.\n\n On a system configured with 4 GB of memory (RAM), Microsoft&174; Windows&174; will report 3.0 GB to 3.8 GB of available memory. This is normal for 32-bit versions of Windows (the most common versions). A 64-bit operating system (Microsoft Windows 64-bit version) is required to utilize 4GB or more of memory. Feature Feature Value Internal memory 4 GBInternal memory type DDR3 Memory clock speed 1600 MHz Component for PC/server Memory form factor 240-pin DIMMMemory layout (modules x size)1 x 4 GBECCNCAS latency 5 Width 133.3 mm Height 30 mm Compatibility Alienware Aurora R4n Alienware x 51n Inspiron 660n Inspiron 660sn Opti Plex 3010n Opti Plex 3020 MTn Optiplex 3020 SFFn Opti Plex 7010n Opti Plex 7010 MTn Opti Plex 7010 SFFn Opti Plex 7010 USFFn Power Edge C5220n Power Edge R210 IIn Precision Workstation T1650n Vostro 270n Vostro 270s