IBM Thinkcentre M81

LENOVO, Part #: 7517B1U Lenovo ThinkCentre M81 7517B1U Desktop Computer Core i3 i3-2130 3.4GHz - Tower - Business Black - 4 GB RAM - 320 GB HDD - DVD-Writer - Intel HD 2000 Graphics Card - Genuine Windows 7 Professional - DisplayPort Enterprise-level performance. Access it faster with Lenovo Enhanced Experience 2.0 for Windows 7 with RapidDrive (in select models), which lets you boot up in as little as 23.43 seconds.Transfer data faster with SATA III (rated at 6GB per second, or twice as fast as SATA II) and optional USB 3.0 (rated at 625MB per second, or ten times as fast as USB 2.0). And maximize productivity with support of up to four independent displays in discrete graphics mode. Minimize