Replacement for P11335-B21: Drop-In Alternatives We Stock
Looking for a replacement for the P11335-B21 (HPE P11335-B21 Xilinx SFNX2542 2 x Ports QSFP28 100Gb/s 870QSFP28 Network Adapter)? 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 P11335-B21
| SKU | P11335-B21 |
|---|---|
| Product | HPE P11335-B21 Xilinx SFNX2542 2 x Ports QSFP28 100Gb/s 870QSFP28 Network Adapter |
| Current price | $400.00 |
| Stock status | In Stock |
| Detail page | View P11335-B21 › |
Drop-in replacements for P11335-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.
HPE P22204-001 HP P22204-001 Xilinx X2522-25G-Plus 2-Ports 10/25GbE SFP28 PCI Express 3.0 x8 Ethernet Network Adapter for ProLiant Server
SKU: P22204-001
Price: $1,184.21
HPE P21111-001 Xilinx X2522 2-Ports 25Gb/s 25GBase-X SFP28 PCI Express 3.0 x8 Network Adapter for ProLiant DL325 Gen10
SKU: P21111-001
Price: $1,549.47
HPE P21109-B21 Xilinx X2522-25GbE-Plus 10/25GbE 2-Ports SFP28 PCI Express 3.0 x8 Adapter for ProLiant Gen10 Server
SKU: P21109-B21
Price: $8,605.26
HPE 844383-001 HP 844383-001 Apollo A10 12 x Ports External 100Gb/s + 24 x Ports Internal 100Gb/s Unmanaged Rack Mountable EDR Infiniband Switch
SKU: 844383-001
Price: $236.84
HPE R8N87A#ABA Aruba 6000 24G-Class4-PoE-4SFP 24-Ports 10/100/1000Base-T PoE 4-Ports SFP 1-Ports USB-C Console 1-Ports USB Type-A Host Layer 2 Managed 1U Rack-mountable Gigabit Ethernet Network Switch
SKU: R8N87A#ABA
Price: $1,109.16
HPE R8N87-61001 Aruba 6000 24G-Class4-PoE-4SFP 24-Ports 10/100/1000Base-T PoE 4-Ports SFP 1-Ports USB-C Console 1-Ports USB Type-A Host Layer 2 Managed 1U Rack-mountable Gigabit Ethernet Network Switc
SKU: R8N87-61001
Price: $1,342.11
HPE R8N89A#ABA Aruba 6000 12G-Class4-PoE-2G/2SFP 12-Ports 10/100/1000Base-T PoE+ 2-Ports SFP 2-Ports 1GbE Base-T 1-Ports USB-C Console 1-Port USB Type-A Layer 2 1U Rack Mount Gigabit Ethernet Manageab
SKU: R8N89A#ABA
Price: $1,221.05
HPE R8N87-61101 Aruba 6000 Series 24G-Class4-PoE-4SFP 24-Ports 10/100/1000Base-T PoE + 4-Ports SFP + 1-Ports USB-C Console + 1-Ports USB Type-A Host Layer 2 Managed 1U Rack-mountable Gigabit Ethernet
SKU: R8N87-61101
Price: $1,342.11
HPE 843400-B21 HP 843400-B21 Apollo InfiniBand EDR 2 x Ports 100Gb/s 840z Mezzanine FIO Network Adapter
SKU: 843400-B21
Price: $71.58
HPE P36137-B21 1-Ports 100GB/s 100GBase-X QSFP28 PCI Express 3.0 x 16 Network Adapter
SKU: P36137-B21
Price: $294.74
HPE 877690-001 HP 877690-001 Infiniband Edr/Ethernet 841QSFP28 2-Ports 100Gb/s Network Adapter
SKU: 877690-001
Price: $305.26
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.