Alternative to 666171-B21: Better-Value Equivalents in Stock
Comparing the 666171-B21 (666171-B21 - HP 10GB ConnectX-2 10GB PCI-Express Network Adapter) against alternatives? Pro Disk Network stocks 12 similar HP parts that offer comparable performance at different price points. Each option below is in-stock, US-warehoused, and tested-and-certified before ship. Bulk pricing is available on quantities of 5+; B2B procurement can use Net 30 with PO.
About the 666171-B21
| SKU | 666171-B21 |
|---|---|
| Product | 666171-B21 - HP 10GB ConnectX-2 10GB PCI-Express Network Adapter |
| Current price | $95.43 |
| Stock status | In Stock |
| Detail page | View 666171-B21 › |
Alternatives to 666171-B21
Each part below is currently in our US warehouse, ships same-day for orders before 2pm ET, and includes our 90-day warranty. SKUs link to the full product page with photos, datasheets and B2B quote form.
666172-001 - HP ConnectX-2 PCI-Express x8 10GB/s Ethernet (Low Bracket) Network Interface Card
SKU: 666172-001
Price: $128.42
HP 868089-001 HPE 868089-001 Mellanox MCX4421A-ACAN ConnectX-4 Lx EN 25GbE PCI-Express Network Adapter
SKU: 868089-001
Price: $117.89
HPE 872467-001 Connectx-4 Lx EN 2-Ports 25Gb/s PCI-Express 3.0 x8 Network Adapter
SKU: 872467-001
Price: $117.89
HPE 874251-001 Connectx-5 2-Port 100Gb/s 100GBase-X QSFP28 PCI Express 3.0 x16 Network Adapter
SKU: 874251-001
Price: $145.26
666170-B21 - HP 1-Port 10GBe NIC PCI-Express G2 Mellanox ConnectX-2 Network Adapter
SKU: 666170-B21
Price: $182.37
HPE P05954-B21 Connectx-4 843QSFP28 2 x Ports QSFP28 100Gb/s PCI Express 3.0 x16 Network Adapter
SKU: P05954-B21
Price: $334.74
HPE P05953-B21 Connectx-4 2-Ports 100Gb/s 100GBase-X QSFP28 PCI Express 3.0 x16 Network Adapter
SKU: P05953-B21
Price: $334.74
NVIDIA MCX755106AC-HEAT ConnectX-7 2-Ports 200Gb/s QSFP112 PCI Express 5.0 x16 Plug-in Card Network Adapter (HP-labeled)
SKU: MCX755106AC-HEAT
Price: $2,444.21
580151-001 - HP Nc551m Dual Port FlexFabric 10GB Converged Network Adapter Network Adapter PCI-Express 2.0 X8 2 Ports
SKU: 580151-001
Price: $103.62
593412-001 - HP InfiniBand 4X QDR ConnectX-2 PCI-Express 2.0 x8 G2 2-Port Host Channel Adapter
SKU: 593412-001
Price: $155.79
592520-B21 - HP InfiniBand 4X QDR ConnectX-2 PCI-Express 2.0 x8 G2 2-Port Host Channel Adapter
SKU: 592520-B21
Price: $155.79
HPE P23828-001 Mellanox Connectx-5 1-Port 100Gb/s QSFP28 PCI Express Gen3 x8 Adapter
SKU: P23828-001
Price: $163.16
How we pick alternatives
Every recommendation above was selected using these criteria:
- Spec parity — capacity, speed, port count, and form factor matched within a 10% tolerance
- Price spread — alternatives shown across the price range, so you can pick on budget
- Brand mix — both OEM-equivalent and trusted aftermarket, all certified
- Reliability data — preferred parts have failure rates below 1% in our 18-month return tracking
- In stock today — shipping today, not 4-6 weeks from now
Want a side-by-side spec comparison?
We can prepare a written comparison covering throughput, power draw, form factor and validated compatibility. Email sales@prodisknetwork.com or call +1 (407) 205-8454 — most quotes ship within 4 business hours.