Lenovo 01PE647 — ThinkSystem ConnectX-4 Lx 10/25GbE SFP28 2-Port OCP Adapter
Technical Identity
Lenovo ThinkSystem-branded Mellanox ConnectX-4 Lx OCP Ethernet adapter (Lenovo PN 01PE647). Dual-port 10/25GbE SFP28 in OCP 2.0 mezzanine form factor, Ethernet only (Lx ASIC). PCIe 3.0 x8 host interface with hardware offloads: RoCE v2, NVMe over Fabrics initiator, SR-IOV, VXLAN/NVGRE/GENEVE encap/decap, DPDK acceleration. Lenovo-qualified for ThinkSystem SR530/SR550/SR570/SR590/SR630/SR650/SR850/SR860/SR950 servers. Condition: Refurbished Grade A — EEPROM-verified, link-tested, EU stock.
Specifications

Brand: Lenovo (OEM Mellanox ConnectX-4 Lx silicon)
Lenovo PN: 01PE647
Ports: 2 × SFP28 (10GbE or 25GbE per port)
ASIC: Mellanox ConnectX-4 Lx (Ethernet only)
Form factor: OCP 2.0 mezzanine (type 1)
Host interface: PCIe 3.0 x8
Protocol: Ethernet only — 10GbE / 25GbE
Offloads: RoCE v2, NVMe-oF initiator, SR-IOV, VXLAN/NVGRE/GENEVE, DPDK
Qualification: Lenovo ThinkSystem firmware
Condition: Refurbished Grade A

What This Is NOT

NOT a PCIe add-in card. OCP 2.0 mezzanine form factor — requires a dedicated OCP slot in the host server. Cannot be installed in a standard PCIe slot.
NOT InfiniBand. ConnectX-4 Lx is Ethernet only (Lx ASIC). For VPI / IB use ConnectX-4 VPI (non-Lx).
NOT 40/50/100GbE. Maximum line rate is 25GbE per port.
NOT supplied with SFP28 transceivers, DAC/AOC cables, or rail kit.
NOT a ConnectX-5/6. No PCIe 4.0, no 200GbE — this is ConnectX-4 generation silicon on PCIe 3.0.

Compatibility

Host servers: Lenovo ThinkSystem SR530, SR550, SR570, SR590, SR630, SR650, SR850, SR860, SR950 (OCP 2.0 slot). May function in other OCP 2.0 hosts but Lenovo firmware may restrict features outside ThinkSystem chassis.
Switch pairing: Any 10GbE or 25GbE SFP28 switch — NVIDIA Spectrum (SN2010/SN2100/SN2410/SN2700), Cisco Nexus 9300, Arista 7050X/7280R, Dell S5200-ON, Juniper QFX5120.
Transceivers and cables: 25G SFP28 SR/LR optics, 10G SFP+ SR/LR optics, SFP28 DAC (0.5–5m), SFP28 AOC (3–30m), or 10G SFP+ DAC/AOC at 10GbE.
Operating systems: RHEL/CentOS 7+, Ubuntu 16.04+, SLES 12+, Windows Server 2016+, VMware ESXi 6.5+ — supported via inbox drivers or MLNX_OFED / WinOF-2.

Frequently Asked Questions (FAQ)
Q. What is the Lenovo 01PE647?
ThinkSystem Mellanox ConnectX-4 Lx 10/25GbE SFP28 2-port OCP Ethernet adapter. Lenovo-qualified for ThinkSystem.
Q. Is 01PE647 an OCP or PCIe card?
OCP mezzanine — requires a dedicated OCP slot. Not a standard PCIe add-in card.
Q. Does 01PE647 support both 10GbE and 25GbE?
Yes — each SFP28 port configures for 10GbE or 25GbE depending on switch port mode.
Q. Can 01PE647 be used in non-Lenovo servers?
Possibly — OEM firmware may restrict features. Verify before deploying.
Q. What condition does T.E.S supply?
Refurbished Grade A — EEPROM-verified, link-tested, EU stock.
Why buy from T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS is a Europe-based data-center networking specialist. Every unit is MPN-identified, EEPROM-verified, and cosmetically inspected before leaving our EU warehouse. Multi-currency invoicing, worldwide express shipping, and free pre-sale technical consultation included.