What motherboard should I get based on this build?

mitchiexx

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Feb 17, 2015
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4,510
PU/Processor:
• Intel® Core™ i5-4690 Processor (6M Cache, up to 3.90 GHz)*
Operating System:
• Windows 8.1
Motherboard:
• ???
Graphics Card:
• MSI GTX 970 Gaming 4G Graphics Cards
Storage/Hard Drive:
• WD - Blue 1TB Internal SATA Hard Drive for Desktops (OEM/Bare Drive) – Blue
Optical Drive:
• Asus 24x DVD-RW Serial-ATA Internal OEM Optical Drive DRW-24B1ST (Black)
Power Supply:
• EVGA 600 B 80 PLUS BRONZE Certified 600W Active PFC ATX12V v2.31/EPS 12V v2.91 3 Year Warranty 100-B1-0600-KR Power Supply
RAM:
• G.SKILL Ripjaws Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10666) Desktop Memory Model F3-10666CL9D-8GBRL
Wireless Adapter:
• ASUS(PCE-N15) maximum performance Wireless-N Network Adapter ( 300Mbps Transmit / 300Mbps Receive) with PCI-E interface, Include Full Height and Low Profile bracket, WPS button Support

Which motherboard should I get, that will allow me to add another graphics card in the future? If a motherboard does not support SLI does that mean that I will not be able to use another graphics card, or how does that work? Also, what wattage should I get for the power supply that will be plenty to add stuff?