The 2.8-inch "Core i5" MacBook Pro (Retina display Mid-2014) features a 22nm "Haswell" 2.8GHz Intel "Core i5" processor (4308U) with dual independent processor "cores" on a single silicon chip a 3MB shared level 3 cache 8GB of integrated 1600-MHz DDR3 L SDRAM (which could be upgraded to 16GB at purchase but cannot be upgraded later) 512GB of PCIe-based flash storage and an integrated Intel Iris 5100 graphics processor that shares memory with the system. It also has an integrated 720p FaceTime HD webcam and a high-resolution 13.3" widescreen LED-backlit 2560x1600 (227 ppi) "Retina" display in a case that weighs just under 3.5 lbs (3.5 kg). It does not have an internal optical drive. Connectivity includes 802.11ac Wi-Fi Bluetooth 4.0 two USB 3.0 ports two "Thunderbolt 2" ports an HDMI port an audio in/out port and an SDXC card slot. Additionally this model has a backlit keyboard an "inertial" glass "buttonless" multi-touch trackpad a "MagSafe 2" power adapter and a sealed internal battery that provides an Apple-estimated 9 hours of battery life.