00YK551 Lenovo ThinkSystem Broadcom 5719 1GbE RJ45 4-Port PCIe Ethernet Adapter

Spare number 00YK551 refers to the ThinkSystem Broadcom 5719 1GbE RJ45 4-Port PCIe Ethernet Adapter, option number 7ZT7A00484 with feature code AUZV. It belongs to the Broadcom NetXtreme Gigabit family of PCIe and OCP adapters for ThinkSystem and System x servers.

Four RJ45 copper ports run at 10, 100 or 1000 Mb/s over Category 5e or 6 cabling, all at full line rate. A BCM5719 chipset sits behind them, and auto-negotiation with automatic MDI crossover lets each port settle on the right link settings. Jumbo frames of 9600 bytes, 802.3x flow control and 802.3ad or 802.1AX link aggregation are part of the feature set.

The host connection is PCI Express 2.0 on four lanes, and the card has no TCP offload engine. iSCSI offload is also absent, and a software initiator handles iSCSI traffic instead. Stateless offloads, TCP, IP and UDP checksum offload, receive and transmit side scaling, and Message Signaled Interrupts reduce CPU load. PXE boot and iSCSI boot work, VLAN tagging follows 802.1q, and VMware NetQueue and Microsoft VMQ support virtualization. The board is 132 mm long, 69 mm high and 19 mm deep. Each card ships with a full-height 4.75-inch bracket plus a low-profile 3.13-inch bracket.

Systems that take it include ThinkSystem ST250 V3 (7DCF, 7DCE), SR630 V3 (7D72, 7D73) and SR650 V3 (7D75, 7D76). The SR250 V3 (7DCM, 7DCL) and SE100 (7DGR) also support it, and the two-port 5720 adapter, 7ZT7A00482, is a sibling.