Sub: 649871-001 A Network Interface Controller controls and translates information between your device and other networked devices or the internet at large. The HPE 647594??B21 Ethernet 331T Adapter (649871??001) connects to your ProLiant Server via a single PCIe2.0?x4 slot and provides a single??direction transfer rate of 1?Gb/s over each of its four?(4) 10/100/1000BASE??T connections. It has 4MB of buffer memory. This HPE 647594??B21 Ethernet Adapter has been tested for complete functionality by our expert in??house Certified Technician and is ready to ship today! Purchase with confidence, as the photos above represent the exact quality of your items, and come bundled with our 90 Day Warranty. *Please note, we have additional refurbished HPE Network Adapters in stock; feel free to send a message and we will update the quantity to suit your specific needs.* Thank you for choosing AltaTech for all of your lightning??fast IT?needs!