Replacement for 378929-B21: Drop-In Alternatives We Stock
Looking for a replacement for the 378929-B21 (378929-B21 - HP Cisco Ethernet SX Fiber SFP Module)? 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 378929-B21
| SKU | 378929-B21 |
|---|---|
| Product | 378929-B21 - HP Cisco Ethernet SX Fiber SFP Module |
| Current price | $419.43 |
| Stock status | In Stock |
| Detail page | View 378929-B21 › |
Drop-in replacements for 378929-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
J9536-61101 - HP Expansion Module - Ethernet, Fast Ethernet, Gigabit Ethernet - 10base-t, 100base-tx, 1000base-t - 20 Ports + 2 X Sfp+
SKU: J9536-61101
Price: $194.74
Cisco DS-SFP-FC8G-SWHP 8Gbps Fibre Channel Multi-mode Fiber 150m 850nm Duplex LC Connector SFP+ Transceiver Module
SKU: DS-SFP-FC8G-SWHP
Price: $200.76
HPE JL827A#ABA FlexNetwork 5140 24G PoE+ 4SFP+ 20-Ports PoE+ 10/100/1000Base-T Gigabit Ethernet RJ-45 4-Ports Combo SFP/RJ-45 4-Ports 10GBase-X 10Gigabit Ethernet SFP+ Layer 3 Managed 1U Rack-Mountabl
SKU: JL827A#ABA
Price: $1,915.79
HPE JG933A#ABA HP JG933A#ABA FlexNetwork 5130-24G-SFP-4SFP+ EI 16 x Ports 8 x Dual Personality Ports SFP/RJ-45 + 4 x SFP+ Ports Layer 3 Managed Rack-mountable Gigabit Ethernet Network Switch
SKU: JG933A#ABA
Price: $415.79
HPE JL826-61001 FlexNetwork 5140-24G-SFP 24-Ports SFP 8x Dual-Personality Ports 4-Ports SFP+ 10GbE 1x RJ-45 Serial Console Port 2x Power Supply Slots Layer 3 Managed 1U Rack-Mountable Gigabit Ethernet
SKU: JL826-61001
Price: $5,138.95
HPE R8S92-61001 Aruba 6300M 24-Ports 10GBase-X SFP+ 10 Gigabit Ethernet 2-Ports 50GBase-X SFP 2-Ports 25GBase-X SFP Layer 3 Managed 1U Rack-mountable Network Switch
SKU: R8S92-61001
Price: $32,847.37
351596-001 - HP SFP Network Cable SFP for Network Device 6.56 ft SFP SFP
SKU: 351596-001
Price: $71.58
HPE JG898-61101 HP JG898-61101 FlexFabric 5700 Series 5700-32XGT-8XG-2QSFP+ 32 x RJ-45 Ports 10GBase-T + 8 x SFP+ Fixed Fiber Ports + 2 x QSFP+ Ports Layer 3 Managed Rack-mountable Gigabit Ethernet Ne
SKU: JG898-61101
Price: $608.42
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.