A Network Card controls and translates information between your compatible device and other attached devices. The HP 629142??B21 Network Adapter connects to your HP Server via a single PCI Express 2.0?x8 slot and provides a transfer rate of 10?Gb/s over two 554FLR??SFP+ connections connections. It also sports 128?MB of integrated buffer memory for more reliable transmission. This HP 629142??B21 Network Adapter has been removed from a working unit, tested for complete functionality by our expert in-house HP-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 HP Server Network Cards 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!