Replacement for 397577-B21: Drop-In Alternatives We Stock
Looking for a replacement for the 397577-B21 (397577-B21 - HP SFP Fiber Channel Network Interface Adapter 2-pack BL20P BL25P BL30P BL35P BL45P)? 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 397577-B21
| SKU | 397577-B21 |
|---|---|
| Product | 397577-B21 - HP SFP Fiber Channel Network Interface Adapter 2-pack BL20P BL25P BL30P BL35P BL45P |
| Current price | $71.58 |
| Stock status | In Stock |
| Detail page | View 397577-B21 › |
Drop-in replacements for 397577-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.
JL292A - HP X2A0 10G SFP+ to SFP+ 20m Active Optical Cable Fiber Optic for Network Device, Switch 1.25 GB/s 65.62 ft 1 Pack 1 x SFP+ Male Network 1 x SFP+ Male Network Orange
SKU: JL292A
Price: $473.68
313585-001 - HP NC6170 PCI-x 2-Port Fiber Channel 1000Base-SX Gigabit Ethernet Server Adapter Network Interface Card (NIC)
SKU: 313585-001
Price: $147.37
313879-B21 - HP NC6170 PCI-x Dual Port Fiber Channel 1000Base-SX Gigabit Ethernet Server Adapter Network Interface Card (NIC)
SKU: 313879-B21
Price: $155.79
516937-B21 - HP 10GBe Mezzinine PCI-Express G2 Dual Port Fiber Channel Adapter Network Interface Card for c-Class BladeSystem
SKU: 516937-B21
Price: $170.53
313560-001 - HP NC6170 PCI-x 2-Port Fiber Channel 1000Base-SX Gigabit Ethernet Server Adapter Network Interface Card (NIC)
SKU: 313560-001
Price: $195.63
NC360M - HP PCI-Express 1GbE 2-Port Mezzinine Fiber Channel Adapter Network Interface Card for c-Class BladeSystem
SKU: NC360M
Price: $195.63
516936-B21 - HP 10GBe Mezzinine PCI-Express Dual Port Fiber Channel Adapter Network Interface Card for c-Class BladeSystem
SKU: 516936-B21
Price: $859.30
AJ906A - HP 8GB Fibre Channel SFP+ Short Range Transceiver 1 x Fiber Channel SFP (mini-GBIC)
SKU: AJ906A
Price: $100.00
HP R4G55B SN3600B 8xPorts 32Gb Fibre Channel SFP+ + 16xPorts 32Gb Fibre Channel SFP+ Ports On Demand Layer2 Managed 1U Fibre Channel Switch
SKU: R4G55B
Price: $16,132.42
401933-001 - HP Power Supply For StorageWorks Fiber Channel Storage Switch 8 or StorageWorks Fiber Channel Storage Switch 16
SKU: 401933-001
Price: $189.47
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.