This item, 817749-B21, is the HPE option part number for the product described as Ethernet 10/25Gb 2-port 640FLR-SFP28 Adapter. Further details below.
Enhance your server's network capabilities with this high-performance HPE Ethernet adapter. This dual-port card delivers blazing-fast 10/25 Gigabit Ethernet connectivity, ensuring optimal bandwidth for demanding applications and virtualized environments. Designed for seamless integration, this adapter supports jumbo frames up to 9.2KB, maximizing data transfer efficiency.
Featuring a FlexibleLOM form factor and PCIe 3.0 interface, this adapter offers a reliable and efficient solution for upgrading your network infrastructure. With a Data Transfer Rate of up to 25 GBps per port, this adapter significantly improves network responsiveness and throughput. Compatible servers include but may not be limited to DL360 Gen10, DL360 Gen9, DL380 Gen10, DL380 Gen9, DL560 Gen10, and DL580 Gen10.
HPE Option Part #: 817749-B21
HPE Spare Part #: 840139-001
HPE Assembly Part #: 817747-001
PRODUCT SPECIFICATIONS FOR 817749-B21:
- Capacity: Jumbo frame size, up to 9.2 KB
- Type: Network adapter
- Form Factor: Plug-in card
- Interface (Bus) Type: FlexibleLOM
- PCI Specification Revision: PCIe 3.0
- Connectivity Technology: Wired
- Data Link Protocol: 10 Gigabit Ethernet, 25 Gigabit Ethernet
- Remote Management Protocol: SNMP
- Data Transfer Rate: 25 GBps
- Status Indicators: Link/activity
- Ports Type: 25 Gigabit Ethernet
- Interfaces: 2 x 25Gb Ethernet - SFP28
- Power Consumption Operational: 9.7 watt
RESOURCES FOR 817749-B21

COMPATIBLE WITH:
PROLIANT DL SERIES
** This list may not be complete. Contact us via Live Chat if you have any questions about compatibility.
Last updated: 5/2/2025
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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
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