with the battery. In February 2010, Apple announced a recall for MacBooks bought between 2006 and 2007 for hard drive issues. This is caused by heat and other problems. Technical specifications Apple used the A1181 code, printed on the case, for this family of models, though 17 variations may be counted if color is included. All are obsolete. Unibody aluminum (2008–2009) On October 14, 2008, Apple announced a MacBook featuring a new Nvidia chipset at a Cupertino, California press conference with the tagline: "The spotlight turns to notebooks". It was replaced by the 13-inch MacBook Pro the following year. The chipset brought a 1066 MHz system bus, use of DDR3 system memory, and integrated Nvidia GeForce 9400M graphics. Other changes include a display which uses LED backlights (replacing the fluorescent tube backlights used in the previous model) and arsenic-free glass, a new Mini DisplayPort (replacing the polycarbonate MacBook's mini-DVI port), a multi-touch glass trackpad which also acts as the mouse button, and the removal of the FireWire 400 port (thus it doesn't support Target Disk Mode, used for data transfers or operating system repairs without booting the system). There was only one product cycle of the aluminum MacBook, as Apple rebranded the next revision in June 2009 as a 13-inch MacBook Pro using the same chassis with an added FireWire port and SD card slot. Design The design had stylistic traits of the MacBook Air which were also implemented into the design of the MacBook Pro. This model is thinner than the original polycarbonate MacBooks, and it made use of a unibody aluminum case with tapered edges. The keyboard of the higher-end model included a backlight. Reception Although Gizmodo concluded it to be "our favorite MacBook to date," they did claim, at this time, its display was inferior to that found on the MacBook Pro and MacBook Air, alleging a smaller viewing angle, washed-out colors, and dimmer backlighting. Similarly, AppleInsider and Engadget concluded it "may well be Apple's best MacBook to date" and "these are terrific choices—not only from an industrial design standpoint, but in specs as well" respectively, while also drawing attention to a lower quality display as compared with the MacBook Pro and MacBook Air. Charlie Sorrel of Wired News reached a similar conclusion about the MacBook display, citing its poor contrast and lack of vertical angle in comparison with the MacBook Pro and even the older white