The HP 647592-001 is a 1Gb 4-Port 331T Gigabit Ethernet PCI-E x4 Card designed for servers. Here are the key specifications:

• Model Number: 647592-001
• Manufacturer: HP (Hewlett-Packard)
• Interface: PCI-Express x4
• Ports: 4 x 1Gb Ethernet ports
• Form Factor: Full-height adapter
• Network Controller: Broadcom BCM5719
• Speed: 10/100/1000 Mbps per port
• Cabling: Supports Category 5e or better UTP cables
• Features:
  • Full-duplex operation, capable of 2000 Mbps per port
  • Jumbo frames up to 9K
  • IEEE 802.3x Flow Control
  • VLAN tagging (IEEE 802.1Q)
  • IPv6 Offload
  • TCP/UDP/IP Checksum Offload
  • Wake-on-LAN (WoL) support
• Operating Systems: Compatible with various operating systems including Windows Server, Linux, and VMware.
• Power Consumption: Low power consumption for energy efficiency.

This card is typically used in enterprise environments where multiple Gigabit Ethernet connections are needed in a server for high network throughput, redundancy, or network segmentation.