Amazon.com: HP 593715-001 NC523SFP 10GB 2-Port Server Adapter - 593717-B21, 593742-001 : Electronics
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HP NC523SFP - Dual Port 10GB Server Adapter
HP NC523SFP QLE3242-HP Dual Port 10Gb Ethernet 10GbE SFP+ PCI-E NIC Network | eBay