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Differences Between ASUS X99-A, X99-S, & X99-PRO Motherboards | GamersNexus - Gaming PC Builds & Hardware Benchmarks
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Press Release: ASUS Announces X99 Deluxe, X99-Pro and X99-A Motherboards | ROG - Republic of Gamers Global
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ASUS X99-PRO/USB 3.1 LGA 2011-v3 Intel X99 SATA 6Gb/s USB 3.1 ATX Intel Motherboard Intel Motherboards - Newegg.com
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Refurbished: ASUS X99-PRO/USB 3.1 LGA 2011-v3 Intel X99 SATA 6Gb/s USB 3.1 ATX Intel Motherboard Motherboard Accessories - Newegg.ca
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