The Dell Tri-metal chassis impresses with high stability and lack of weaknesses. The model easily copes with the usual weak spots above the optical drive, the battery slot and the palm rest. it has passed the MIL-STD-810G U.S. military standard. But the durability of the case comes at the expense of its relatively high weight. The workmanship is impeccable - even gaps, precisely fitting components and flawless surfaces. The surfaces are durable and give a high-quality impression. The silver-gray casing is conservative and ensures an appropriate appearance in the business environment. Perhaps this is the reason the orange keyboard frame was omitted in the current model. Note: Used condition and Re-installed & tested (excellent working condition) Dell latitude E5520 Specifications: Intel i5-2540 2.60GHz 4GB DDR3 Memory 750G HDD Intel HD Graphics 3000 15.6" HD Anti-glare LED Backlit Display Intel Centrino N 6300 Wireless 6300 (802.11n) High Definition Audio Device 8X DVD+/-RW Drive Input/Output: 3 x USB 1 x VGA 1 x HDMI 1 x SD Card Reader 1 x RJ45 Ethernet 1 x Headphone Jack 1 x Firewire 1 x Power Adapter and laptop with three months warranty