Basic Specifications Manufacturer's Part Number SDA7MUK Weight 11kg RAM 2 GB (installed) / 4 GB (max) - DDR2 SDRAM - non-ECC - 667 MHz - PC2-5300 Cache Memory 1 MB L2 Cache Manufacturer Warranty 1 year warranty ( on-site ) Networking Network adapter - PCI Express x1 - Ethernet , Fast Ethernet , Gigabit Ethernet Storage Controller Serial ATA ( Serial ATA-300 ) ; IDE ( ATA-100 ) Cache Per Processor 1 MB Audio Output Sound card Hard Drive 1 x 160 GB - standard - Serial ATA-300 Form Factor Tower Product Description Lenovo ThinkCentre A57 9702 - Pentium Dual Core E2200 2.2 GHz Processor Main Features Intel Extended Memory 64 Technology, Intel Execute Disable Bit, Enhanced Intel SpeedStep Technology Dimensions (WxDxH) 17.5 cm x 44 cm x 40.2 cm Monitor None. Weight 11 kg Localisation English / United Kingdom Optical Storage DVD-Writer Type Personal computer Power AC 120/230 V ( 50/60 Hz ) Manufacturer Selling Prog ram TopSeller OS Provided Microsoft Windows Vista Business / XP Professional downgrade Graphics Controller Intel GMA 3100 Processor 1 x Intel Pentium Dual Core E2200 / 2.2 GHz ( Dual-Core ) Memory Allocation Technology Dynamic Video Memory Technology 4.0 Environmental Standards EPA Energy Star OS Preinstalled Windows Vista