SKU: 57395840931

HPE® 817753-B21 alternative NVIDIA ConnectX-4 based NIC PCIe 3.0 x8 Dual Port 25GbE Open SFP28

Sale price$159.30 Regular price$177.00
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Description

HPE® 817753-B21 alternative NVIDIA ConnectX-4 based NIC PCIe 3.0 x8 Dual Port 25GbE Open SFP28HPE 817753 B21 alternative NVIDIA ConnectX 4 NIC PCIe 3. 0 x8 Dual Port 25GbE SFP28 HPE 817753 B21 PCIe x8 NVIDIA Mellanox ConnectX 4 Dual Port 25G SFP28 adapter with 25Gb s Ethernet connectivity addresses virtualized infrastructure challenges for todays demanding markets and applications. Providing true hardware based I O isolation with unmatched scalability and efficiency, ConnectX 4 provides a cost effective and flexible Ethernet adapter solution

HPE® 817753-B21 alternative NVIDIA ConnectX-4 NIC PCIe 3.0 x8 Dual Port 25GbE SFP28

HPE® 817753-B21 PCIe x8 NVIDIA Mellanox ConnectX-4 Dual-Port 25G SFP28 adapter with 25Gb/s Ethernet connectivity addresses virtualized infrastructure challenges for today’s demanding markets and applications. Providing true hardware based I/O isolation with unmatched scalability and efficiency, ConnectX-4 provides a cost-effective and flexible Ethernet adapter solution for Web2.0, cloud, data analytics, database, and storage platforms. It provides a combination of 25G bandwidth, sub-microsecond latency and a 75 million packets per second message rate. It includes native hardware support for RDMA over Converged Ethernet (RoCE), Ethernet stateless offload engines, Overlay Networks, GPUDirect technology and Mellanox Multi-Host Technology.

System Requirements

  • Windows, RHEL/CentOS, FreeBSD, VMware, OpenFabrics Enterprise Distribution (OFED), OpenFabrics Windows Distribution (WinOF)
  • An available PCI Express x8/ x16 slot

Specification

  • Compliant with PCI Express Specification Revision 3.0, 2.0 and 1.1
  • 2.5, 5.0, or 8.0GT/s link rate x8
  • Auto-negotiates to x8, x4, x2, or x1
  • Support for MSI/MSI-X mechanisms
  • Supports dual-Port 25G, 10G, or 1G SFP+
  • IEEE802.3by, 25G supporting all FEC modes
  • IEEE802.3az Energy Efficient Ethernet 
  • IEEE802.3ap based auto-negotiation and KR start-up
  • Support Standards IEEE802.3ad, IEEE802.1ax, IEEE802.1Q, IEEE802.1P, IEEE802.1Qaz,  IEEE802.1Qbb, IEEE802.1Qbg, IEEE1588V2
  • Jumbo frame support 9.6KB
  • Independent NC-SI SMBus interface
  • Independent stand-by and wake-on-Lan signals
  • Hardware based reliable transport
  • Collective operation offloads
  • PeerDirect RDMA (aka GPUDirect communication acceleration)
  • 64/66 encoding
  • Extended reliable connected transport
  • Dynamically connected transport
  • RDMA over Converged Ethernet (RoCE)
  • TCP/UDP/IP stateless offload
  • LSO.LRO. checksum offload
  • Hardware offload of encapsulation and decapsulation of NVGRE and VXLAN  overlay networks
  • SR-IOV, Multi-function, Enhanced QoS, VMware support
  • SR-IOV up to 256 virtual functions
  • SR-IOV up to 8 physical functions per port
  • Guaranteed QoS for VMs 
  • OpenMPI, IBM PE, OSU MPI, Intel MPI protocol support
  • NC-SI over MCTP over SMBus and NC-SI over MCTP over PCIe-Baseboard  Management Controller interface
  • Remote boot over Ethernet, iSCSI, PXE, and UEFI
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 57395840931

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4.1 ★★★★★
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Lynne Zimmerman
Waukegan, US
★★★★★ 1
Mouth BURNING!!!
Size: 1 Ounce (Pack of 2)
Burning sensation??!! I’m sorry I bought this as I’m going to throw it away!!!
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Reviewed in the United States on May 5, 2026
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Gina L Arens
Natrona Heights, US
★★★★★ 2
Save your money......
Size: 1 Ounce (Pack of 1)
I had high hopes for this, but sadly, it fell short. I have to wear a CPAP mask at night & the dry mouth is just one of the things I hate about it. I saw this, read the reviews & decided to give it a try. I used it per the directions, but it really did nothing to alleviate the dry mouth. I'm giving it 2 stars because it doesn't taste bad, but that's the only good thing I can say about this.
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Reviewed in the United States on February 9, 2026
K
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Kathleen
Phoenix, US
★★★★★ 5
Very Helpful with dry mouth due to Autoimmune illnesses
Size: 1 Ounce (Pack of 1)
I have an illness that causes very dry mouth and nothing seems to work even a $65.00 prescription that was recommended. My hygienist suggested I try Salivea, so I got the spray. I can honestly say nothing has work quite like this. It's only been a few days but I also bought the toothpaste and mouthwash. I'm highly impressed so thank you Loretta for recommending
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 3, 2026
L
Verified Purchase
Lady Anon
Chelsea, US
★★★★★ 5
Relieves dry mouth
Size: 1 Ounce (Pack of 1)
Great seller, item as described. My rx causes dry mouth and this is the only product I’ve used that relieves it.
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Reviewed in the United States on March 28, 2026
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Shirley Null
Carnegie, US
★★★★★ 4
Dry mouth helped
Size: 1 Ounce (Pack of 1)
I have tried others that did not work but this one does help.
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Reviewed in the United States on January 15, 2026

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