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The Xbox 360 video game console has appeared in various retail configurations during its life-cycle. At its launch, the Xbox 360 was available in two retail configurations: the "Xbox 360" package (unofficially known as the 20 GB Pro or Premium), priced at US$399.99 or £279.99, and the "Xbox 360 Core," priced at US$299.99 and £209.99. The original shipment of Xbox 360s included a cut-down version of the Media Remote as a promotion. The Elite package was launched later at a retail price of US$479.99. The "Xbox 360 Core" was replaced by the "Xbox 360 Arcade" in October 2007 and a 60 GB version of the Xbox 360 Pro was released on August 1, 2008. The Pro package was discontinued and marked down to US$249.99 on August 28, 2009 to be sold until stock ran out, while the Elite was also marked down in price to US$299.99. In June 2010, Microsoft announced a new, redesigned, model and the discontinuation of the Elite and Arcade models.〔 ==Current models (Xbox 360 S and Xbox 360 E)== Technically designated the Xbox 360 S, commonly known as the Xbox 360 Slim,〔(【引用サイトリンク】title=Microsoft Xbox 360 Slim )〕 and marketed simply as the Xbox 360; current Xbox 360 consoles are based on a redesign of the Xbox 360 hardware which was officially announced on June 14, 2010 during a press briefing prior to that year's E3. It was speculated that a complete redesign of the Xbox 360 hardware was being produced after pictures of a possible new motherboard design surfaced on March 17, 2010.〔(【引用サイトリンク】url=http://www.industrygamers.com/news/xbox-360-slim-in-the-works/ )〕 Ads later surfaced on June 13, 2010 showing a slimmer Xbox 360 design, which was expected to include a 250 GB hard drive and integrated Wi-Fi functionality. Xbox 360 S consoles feature redesigned internal architecture with the Valhalla motherboard, which allows for around 30% more space than previous motherboards, and the XCGPU, an integrated CPU/GPU/eDRAM chip using a 45 nm fabrication process.〔 This allows them to be both smaller and quieter than the previous versions of the Xbox 360. They also feature five standard USB 2.0 ports (two more than previous models) and an additional custom USB port for use with peripherals such as the Kinect sensor.〔 Unlike older models, 2.4 GHz 802.11 b/g/n Wi-Fi and a TOSLINK S/PDIF optical audio connector are also built-in, allowing for digital audio and wireless networking without the need for external adapters. The Memory Unit slots found on previous consoles have been removed in favor of the USB flash drive solution added in a previous system software update (released on April 6, 2010)〔(【引用サイトリンク】title=Microsoft: USB Memory Support Hits Xbox 360 on April 6, Xbox 360 Flash Drives Hit in May )〕 and the power and DVD drive eject 'buttons' are touch sensitive rather than the physical buttons found on previous models. The external hard disk drive connector has also been swapped for an internal bay for use with a proprietary hard drive. The hard drive bay is designed such that a specially formatted laptop hard drive may be loaded in. It has been noted that users can also open up the casing of the original model's hard drive and simply load it into the drive bay instead of purchasing a hard drive branded for use with the new model. Other notable hardware changes include the use of one larger fan compared to the previous Xbox 360 models (which used two smaller ones) and the design of the vents, which are similar to those used on the original Xbox. Unlike previous generations of the console which had names to distinguish different SKUs, the new models are to be marketed solely by the amount of included storage, in a similar fashion to current models of its main competitor the PlayStation 3. When the first new models began to ship, remaining stock of the Elite package dropped in price to US$249.99〔 or A$349 and the Arcade dropped to US$149.99.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「List of Xbox 360 retail configurations」の詳細全文を読む スポンサード リンク
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