Description:HP Ethernet 10Gb 2-Port 521T AdapterPart Number(s) Manufacturer Part# 867707-B21 Spare Part# 869573-001 Note:Please confirm Low Profile or Full Height Bracket In comments box at checkout. Thank you Overview: The HP Ethernet 10Gb 2-port 521T Adapter utilizes CAT 6A cabling and is backward compatible to existing 1GBASE-T infrastructure. This allows for a hassle free improvement of network speed without either changing the cables or major upgrade of equipment - thus saving on capital expenditure. This adapter protects applications - data and server infrastructure from cyber-attacks by authenticating digitally signed firmware via a Root of Trust architecture. In addition - they offer Secure Boot - Device-level Firewall and other advanced security features. Specifications: CategoryHP Networking Sub-CategoryEthernet Adapter Generation521T Part Number869573-001 Products ID727923 ManufacturerHP TypeNetwork Adapter InterfaceEthernet 10GBase-T Data Link Protocol 10 Gigabit Ethernet, Ethernet 10GBase-T Form FactorPlug-in Card Interface TypePCI Express 3.0 x8 Ports2 Port Connectivity TechnologyWired