Replacement for 811545-B21: Drop-In Alternatives We Stock
Looking for a replacement for the 811545-B21 (811545-B21 - HP 4-Ports 366T Ethernet NIC - 4-1GB Ethernet Ports, PCI Express 2.1 X4)? Pro Disk Network ships HP drop-in replacements and equivalent modern parts from US inventory. Every alternate below is in-stock today with same-day shipping for orders placed before 2pm ET. If your unit is still under warranty, contact our engineering team — we offer cross-shipping for B2B customers on Net 30 terms.
About the 811545-B21
| SKU | 811545-B21 |
|---|---|
| Product | 811545-B21 - HP 4-Ports 366T Ethernet NIC - 4-1GB Ethernet Ports, PCI Express 2.1 X4 |
| Current price | $517.47 |
| Stock status | In Stock |
| Detail page | View 811545-B21 › |
Drop-in replacements for 811545-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.
811546-B21 - HP 4-Port 366t Ethernet NIC 4-1GB Ethernet Ports, PCI-Express 2.1 X4
SKU: 811546-B21
Price: $191.58
816551-001 - HP 4-Port 366t Ethernet NIC 4-1GB Ethernet Ports, PCI-Express 2.1 X4
SKU: 816551-001
Price: $191.58
811544-001 - HP 4-Port 366t Ethernet Nic - 4-1GB Ethernet Ports, Pci Express 2.1 X4
SKU: 811544-001
Price: $191.58
811547-B21 - HP 4-Port 366t Ethernet NIC 4-1GB Ethernet Ports, PCI-Express 2.1 X4
SKU: 811547-B21
Price: $305.26
H76298-001 - HP 4-Port 366t Ethernet Nic - 4-1GB Ethernet Ports, Pci Express 2.1 X4
SKU: H76298-001
Price: $517.47
FH969AA - HP Pro 1000 CT NIC PCI-Express x1 Gigabit Ethernet Network Interface Card (NIC)
SKU: FH969AA
Price: $151.33
BV897A - HP NC382m PCIe DP Multifunction Gigabit Server Adapter NIC PCI Express X4 Gigabit Ethernet 2 Ports for E5300 12TB LFF MDL SAS
SKU: BV897A
Price: $117.89
516437-B21 - HP NC375i PCI-Express Quad Port 1GB Gigabit Ethernet Network Interface Card (NIC) for ProLiant ML370 G6 Server
SKU: 516437-B21
Price: $73.68
468001-001 - HP NC375i PCI-Express Quad Port 1GB Gigabit Ethernet Network Interface Card (NIC) for ProLiant ML370 G6 Server
SKU: 468001-001
Price: $73.68
NC326M - HP PCI-Express 2-Port 1GB Mezzanine Gigabit Ethernet Network Interface Card (NIC)
SKU: NC326M
Price: $182.37
How we pick replacements
Every recommendation above was selected using these criteria:
- Drop-in compatibility — same form factor (2.5"/3.5", PCIe slot, SFP port, etc.), so it fits the original chassis without modification
- Equivalent or better performance — matched on RPM/IOPS/speed/throughput, never downgraded
- Same-brand-preferred — we list the OEM-equivalent first when available, then trusted aftermarket
- Warranty coverage — 90-day Pro Disk warranty on every part, with 1-year option for B2B
- In stock today — never recommend a part that is on backorder
Need help confirming compatibility?
Our engineers validate every replacement against your specific server, switch, or chassis model before shipment. Email sales@prodisknetwork.com with your platform model (e.g., Dell PowerEdge R740, HP DL380 Gen10, Cisco Catalyst 9300) and we will confirm the exact part number that drops into your hardware.