This item, 840140-001, is the HPE spare part number for the product described as Ethernet 10/25Gb 2-port 640SFP28 Adapter. Further details below.
Experience unmatched networking performance with the HPE Ethernet 10/25Gb 2-port 640SFP28 Adapter (840140-001). Designed for seamless integration with HPE servers such as DL20 Gen10 and ML350 Gen10, this adapter ensures reliable and speedy data transfer with its 100 Gbps bidirectional throughput. Benefit from advanced features like RDMA over Converged Ethernet and VLAN support to enhance your server's capabilities.
HPE Option Part #: 817753-B21
HPE Spare Part #: 840140-001
PRODUCT SPECIFICATIONS FOR 840140-001:
- Product Line: HPE
- Model: 640SFP28
- Processor Brand: Mellanox Technologies
- Processor Type: Mellanox ConnectX-4 Lx
- Processors Installed: 1
- Compliant Standards: IEEE 1588v2, IEEE 802.1ab (LLDP), IEEE 802.1p, IEEE 802.1Q, IEEE 802.1Qau, IEEE 802.1Qaz, IEEE 802.1Qbb, IEEE 802.1Qbg, IEEE 802.3ad (LACP), IEEE 802.3ae, IEEE 802.3az, IEEE 802.3x
- Connectivity Technology: Wired
- Data Link Protocols: 10 Gigabit Ethernet, 25 Gigabit Ethernet
- Data Transfer Rate: 25 GBps
- Features: Extended Message-Signaled Interrupts (MSI-X), Full duplex mode, IPv4 support, IPv6 support, Jumbo Frames support, LACP support, Large Send Offload (LSO), LLDP support, Network Virtualization using Generic Routing Encapsulation (NVGRE), PXE support, QoS tagging, Quality of Service (QoS), RDMA over Converged Ethernet (RoCE), RDMA over Converged Ethernet (RoCE) v2, Receive Side Scaling (RSS), TCP Segmentation Offload (TSO), TCP/IP checksum offload, TCP/IP offloading, UDP/IP offloading, UEFI support, Virtual Extensible LAN (VXLAN), VLAN support
- Form Factor: Plug-in card
- Host Interface: PCI Express 3.0 x8 / PCI Express 3.0 x4
- PCI Specification Revision: PCIe 3.0
- Product Type: Network adapter
- Remote Management: SNMP
- Status Indicators: Link/activity
- Interface Provided: 2 x 25Gb Ethernet - SFP28
- Port Quantity: 2
- Network & Adapter Ports: 25 Gigabit Ethernet
- Capacity: Jumbo frame size: up to 9.6 KB
- Performance: Bandwidth per port: 50 Gbps, Bidirectional throughput: 100 Gbps
RESOURCES FOR 840140-001 (817753-B21)
Quickspecs for 817753-B21COMPATIBLE WITH:
PROLIANT ML SERIES
** This list may not be complete. Contact us via Live Chat if you have any questions about compatibility.
FREQUENTLY ASKED QUESTIONS FOR 840140-001:
- What servers are compatible with the 840140-001 adapter?
The 840140-001 adapter is compatible with HPE servers, including DL20 Gen10 and DL360 Gen10, ensuring seamless integration and performance. - What is the maximum data transfer rate of the 840140-001?
The 840140-001 offers a data transfer rate up to 25 Gbps per port, providing a total bidirectional throughput of 100 Gbps. - Does the 840140-001 support advanced networking features?
Yes, the 840140-001 supports advanced features such as RDMA, VLAN, and Quality of Service (QoS) to optimize your network performance.
HPE PARTSURFER INFO FOR 840140-001 (817753-B21)
| Spare PN | Description | |
|---|---|---|
 | 840140-001 | Ethernet 10/25Gb 2-port 640SFP28 adapter, PCIe card form-factor - Has two dual 10/25Gbe SFP28 ports capable of 50 Gbps bi-directional, 100 Gb/s aggregate bi-directional theoretical bandwidth - Requires one x8 PCI (Gen 8) Express slot ; |
Last Updated: 2026-07-28
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This product is warrantied against hardware failure for a period of 1 Year from the date of purchase. Before making a purchase, please take a moment to review our return policy below.
Returns
It is the customer's responsibility to verify compatibility with their machine(s) before placing an order. If an item is ordered by mistake, it can be returned for refund, minus a 25% restocking fee, within 5 business days of receipt. The cost of freight is not refundable.
Please be aware that factory-sealed equipment can only be returned if it remains unopened.
Defective Products
If you have received a defective part and your machine is still within the HPE warranty period, please initiate a warranty exchange by visiting the HPE Enterprise Support Center. Be sure to have the serial numbers of the defective drive and your server/storage array handy.
In case your hardware becomes defective during the Global One warranty period, but the HPE warranty has expired, you can return the product to us for a working replacement. You are responsible for the shipment of returned merchandise. However, we will cover the expense of Ground /Economy shipment for the replacement item(s).
Requesting an RMA
To initiate a return or warranty claim, please complete and submit the RMA Request Form.
