Replacement for 286803-B21: Drop-In Alternatives We Stock
Looking for a replacement for the 286803-B21 (HP 286803-B21 NC7771 1 x Port 10/100/1000Base-T PCI-X Server Adapter. In Stock)? 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 286803-B21
| SKU | 286803-B21 |
|---|---|
| Product | HP 286803-B21 NC7771 1 x Port 10/100/1000Base-T PCI-X Server Adapter. In Stock |
| Stock status | In Stock |
| Detail page | View 286803-B21 › |
Drop-in replacements for 286803-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.
826567-B21 - HP ProLiant DL380 Gen10 High-Perferformance Server 2 x Xeon Gold 6130 2.1GHz 64GB Memory 1GB 4-Port 331i and 2-Port 640FLR-SFP28 Adapter P408i-a 8-Port Smart Array Controller 2 x 800W Power Supply
SKU: 826567-B21
Price: $2,300.00
A7012A - HP PCI-X 2-Port Gigabit Ethernet Card PCI-X 2 x RJ-45 10/100/1000Base-T
SKU: A7012A
Price: $73.68
395863-001 - HP Single Port Gigabit Server Adapter 10/100/1000-T Mbps PCI Network Card
SKU: 395863-001
Price: $147.37
313381-B21 - HP Nc7170 PCI-x Dual Port 1000t Gigabit Server Adapter Network Adapter PCI-x Hot-pluggable 133MHz 2 Ports (Full Height) Bracket.
SKU: 313381-B21
Price: $79.36
JC621A - HP Procurve 10500 16-Port GbE SFP 8-Port GBE Combo 2-Port 10GBE XFP EA Module
SKU: JC621A
Price: $3,919.05
J9773-61001 - HP 2530-24G 24-Port x PoE+ 4 x Slot +10/100/1000Base-T PoE-Port Rack-Mountable Switch
SKU: J9773-61001
Price: $194.74
J9990-61001 - HP 5400r Zl2 20-Port 10/100/1000Base-T Poe+/4-Port 1g/10gbe SFP+ Macsec V3 Zl2 Expansion Module
SKU: J9990-61001
Price: $1,805.26
J9990A - HP 5400r Zl2 20-Port 10/100/1000Base-T Poe+/4-Port 1g/10gbe SFP+ Macsec V3 Zl2 Expansion Module
SKU: J9990A
Price: $1,805.26
HPE R8Q70A#ABA Aruba 6200M 48-Port PoE+ 10/100/1000Base-T Gigabit Ethernet RJ-45 4-Port 10GBase-X 10Gigabit Ethernet SFP+ Uplink Layer 3 Managed Stackable 1U Rack-mountable Network Switch
SKU: R8Q70A#ABA
Price: $4,713.68
J9989A - HP 5400r Zl2 12-Port 10/100/1000Base-T Poe+/12-Port 1gbe SFP Macsec V3 Zl2 Expansion Module
SKU: J9989A
Price: $5,149.47
J9989-61001 - HP 5400r Zl2 12-Port 10/100/1000Base-T Poe+/12-Port 1gbe SFP Macsec V3 Zl2 Expansion Module
SKU: J9989-61001
Price: $5,149.47
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.