A late 2011 model, the MacBook Pro A1278 features a 2.5Ghz dual-core Intel “Core i5” processor. That’s two independent processor cores on a single chip. This machine packs: 16GBs of RAM; a 500GB Serial ATA hard drive disk; and has been pre-installed with the OS Sierra operating system. It features: A 13.3-inch LED-backlit widescreen with TFT Active Matrix “glossy” display (1280×800 native resolution) Unibody aluminum case design – milled from a single piece of aluminium, with a backlit keyboard longer lasting battery with an estimated 7 hours battery life on a single charge On board processor is the 2.5 GHz Intel Core i5 processor “Intel HD Graphics 3000” which shares 384 MB of memory with the system Connectivity which includes Thunderbolt port (up to 10 Gbps bandwidth); two USB 2.0 ports; a Firewire 800 port; built-in AirPort Extreme; Gigabit Ethernet; Bluetooth 2.1; headphone port; and SDXC card slot Integrated FaceTime HD webcam Built-in stereo speakers
Apple are one of the world's biggest and best loved technology companies. Based out of their head quarters in California there is always a huge demand for their products. They run a distribution model where, if you have the budget and the sales medium, it is best to buy directly from them. However you will likely need a bricks and mortar store or a prominent e-store to qualify for direct purchasing from Apple. There are also a number of suppliers that deal in refurbished, returned and reconditioned Apple products and these are easier to source from for wholesale buyers who are starting out.