Sporting a gray casing, this 15.6-inch notebook by Hewlett-Packard runs on the powerful Intel Core i3 processor, with a speed of 2.3 GHz. Packaged with 4 GB of memory, this HP laptop can be expanded to accommodate up to 8 GB of DDR3 SDRAM. The HP ProBook 4530s includes a DVD-RAM/R/RW drive for reading or writing CDs or DVDs. Furthermore, this notebook is equipped with a 500 GB hard drive. This HP laptop excels at connectivity, with an included IEEE 802.11b/g/n wireless card and support for Gigabit Ethernet. Furthermore, the HP ProBook 4530s includes a flush built-in microphone and webcam, making video chatting and VoIP a breeze. With a 47 watt-hour battery, the 15.6-inch notebook operates for up to six hours on a single charge and is entirely Green Compliant. The Intel i3 processor allows for Hyper-Threading on a 64-bit Microsoft Windows 7 installation.