P21106-B21, HPE Intel I350 Adapter, 1Gb/4port/Base-T

The HPE Ethernet 1Gb 4-port BASE-T I350-T4 Adapter P21106-B21 is a server-grade Gigabit network adapter built for reliable 1 Gbps connectivity in modern data centers and enterprise networks. Designed as a plug-in PCI Express 2.0 x4 card, it delivers four independent 10/100/1000 Mbps RJ-45 ports in a compact form factor, ideal for HPE ProLiant Gen10 Plus and Gen11 servers. Powered by the Intel I350-AM4 controller, the adapter supports advanced offload features to reduce CPU load, improve throughput, and keep latency low for critical business applications.

With support for 1000Base-T over standard copper cabling, the P21106-B21, HPE Intel I350 Adapter, 1Gb/4port/Base-T lets you expand network capacity without changing existing Cat5e or Cat6 infrastructure. Each of the four ports can be used for production traffic, storage, or management networks, giving small and medium businesses as well as cloud and hosting providers a flexible way to increase port density per server. The card’s wired connectivity ensures stable performance for virtualization clusters, backup systems, and database workloads.

The adapter supports I/O offloads such as TCP/IP checksum and segmentation, iSCSI offload, VLAN tagging, and SR-IOV. These capabilities help optimize virtualized environments by allowing multiple virtual machines to share the same physical adapter with better isolation and efficiency. PXE boot support also simplifies remote deployment and bare-metal provisioning across distributed sites.

Typical power consumption of only 5 W (6 W max) makes this adapter suitable for high-density rack deployments where power and cooling budgets are tight. Distributors can position the P21106-B21 as a cost-effective network upgrade for existing HPE server fleets, while system integrators can use it to build resilient multi-port designs for customers in Asia, Europe, Africa, and North America. End users benefit from stable 1 Gbps performance, easy integration with HPE ProLiant platforms, and consistent copper-based connectivity that works across diverse enterprise and branch environments.