Replacement for 491340-B21: Drop-In Alternatives We Stock
Looking for a replacement for the 491340-B21 (491340-B21 - HP ProLiant BL685c G6 CTO Blade Server System)? 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 491340-B21
| SKU | 491340-B21 |
|---|---|
| Product | 491340-B21 - HP ProLiant BL685c G6 CTO Blade Server System |
| Current price | $1,240.00 |
| Stock status | In Stock |
| Detail page | View 491340-B21 › |
Drop-in replacements for 491340-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.
371708-001 - HP System Fan for ProLiant Bl25p Bl20p G3 Blade Server Xw25p Blade workstation
SKU: 371708-001
Price: $71.58
461897-B21 - HP ProLiant Bl2x220c G5 CTO No Processor No Ram Serial Ata-150 2x Gigabit Ethernet Nc326i Blade Server
SKU: 461897-B21
Price: $155.79
640996-B21 - HP ProLiant BL420c Gen8 CTO Chassis With No Cpu, No Ram, 2x SAS/SATA/ssd Hard Drive Bays, 10GB Flexible Lom, 2-way Blade Server
SKU: 640996-B21
Price: $342.11
690142-B21 - HP ProLiant Bl420c G8- Cto Chassis with No Cpu No Ram 2x SAS/sata/ssd Hard Drive Bays 10GB Flexible Lom 2-Way Blade Server
SKU: 690142-B21
Price: $378.95
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.