The HP ProBook 4720s has feature a Intel Core i7-620LM (2.00 GHz, 4 MB L3 cache), Intel Core i5-520M (2.40 GHz, 3 MB L3 cache), Intel Core i5-430M (2.26 GHz, 3 MB L3 cache), Intel Core i3-350M (2.26 GHz, 3 MB L3 cache), or Intel Core i3-330M (2.13 GHz, 3 MB L3 cache), Mobile Intel HM57 Express Chipset, up to 4GB of DDR3 RAM, up to 500GB of HDD space, 17.3-inch LED-backlit HD+ display has a resolution of 1600 x 900 pixels, the integrated Intel HD graphics or ATI Mobility Radeon HD 4350 dedicated GPU and a DVD burner or Blu-Ray Combo drive. Another features of HP ProBook 4720s, a Intel Centrino 802.11a/b/g/n or Atheros 802.11b/g/n, Bluetooth, 3 x USB 2.0, 1 x external VGA monitor, 1 x HDMI, 1 x stereo microphone in, 1 x stereo, eadphone/line-out, 1 x AC power, 1 x RJ-45, 1 x RJ-11 (optional), 1 x eSATA/USB 2.0 Combo, 1 x Express Card/34 and Windows 7 or SUSE Linux OS.