Samsung has Series 2 and 4 notebooks are limited to a 1366x768 display, while the 15.6-inch Series 6 gets a 1600x900 resolution. The higher models feature a docking station connector and are quoted at seven hours of runtime on a six-cell battery -- neither spec is listed for the Series 2. All systems come with USB 3.0 connectivity, a 1.3MP webcam, as well as Samsung's Easy Migration service and Windows 7 Professional. Samsung didn't share pricing but Series 2 and 4 are coming in April while Series 6 should follow in May.