Lenovo 01LJ586 25GbE RoCE Dual-Port Ethernet Adapter Pair - 01LJ586
This enterprise network adapter pair is the Lenovo 01LJ586, consisting of two 25GbE dual-port Ethernet adapters with RoCE (RDMA over Converged Ethernet) capability designed for Lenovo server platforms. These are refurbished, tested units from T.E.S IT-SOLUTIONS. This listing is for a pair of adapters (2 units). These are NOT single-port adapters. They are designed specifically for Lenovo servers and may NOT be compatible with non-Lenovo platforms without verification.
Engineering Context
Each 01LJ586 adapter provides two 25GbE Ethernet ports with hardware RoCE offload for low-latency RDMA data transfers. The 25GbE speed operates over SFP28 connectors using NRZ signaling at 25.78125 Gb/s per lane. RoCE support enables kernel-bypass networking for latency-sensitive workloads without requiring InfiniBand infrastructure. The adapters connect via PCIe interface to Lenovo server motherboards.
Deployment and Use Cases
The 01LJ586 adapter pair is deployed in Lenovo server environments requiring high-throughput, low-latency Ethernet connectivity. Common use cases include NVMe-oF storage fabrics using RoCE v2 for RDMA storage access, VMware ESXi or KVM virtualization with SR-IOV passthrough, database servers running OLTP workloads requiring sub-microsecond network latency, and scale-out storage clusters with dual-path redundancy using one adapter per path.
Technical Specifications
Model (Lenovo P/N): 01LJ586
Type: 25GbE Ethernet Adapter (sold as pair)
Ports per Adapter: 2x SFP28
Speed: Up to 25 Gb/s per port
RDMA: RoCE (RDMA over Converged Ethernet)
Platform: Lenovo Servers
PCIe Interface: PCIe (exact generation per server model)
Quantity: 2 adapters per listing
Condition: Refurbished
Compatibility and Hard Constraints
The 01LJ586 is a Lenovo OEM part number designed for specific Lenovo server platforms. Server compatibility should be verified against Lenovo ServerProven compatibility lists before ordering. This adapter requires SFP28 transceivers or SFP28 DAC cables for connectivity — transceivers and cables are NOT included. It is NOT a QSFP28 adapter and does NOT support 100GbE aggregate speeds. For non-Lenovo servers, firmware and driver compatibility is not guaranteed.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS provides this 01LJ586 adapter pair as refurbished units, lab-tested for 25GbE RoCE operation. Technical consultation is available to verify Lenovo server compatibility. Global shipping with 1-3 business day handling time.