Replacement for 518873-B21: Drop-In Alternatives We Stock
Looking for a replacement for the 518873-B21 (518873-B21 - HP ProLiant BL685c G7 Blade Server 4 x Opteron 2.4GHz Serial Attached SCSI RAID Controller)? 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 518873-B21
| SKU | 518873-B21 |
|---|---|
| Product | 518873-B21 - HP ProLiant BL685c G7 Blade Server 4 x Opteron 2.4GHz Serial Attached SCSI RAID Controller |
| Current price | $14,354.21 |
| Stock status | In Stock |
| Detail page | View 518873-B21 › |
Drop-in replacements for 518873-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.
532020-B21 - HP ProLiant BL460c G6 Blade Server 1 x Intel Xeon E5530 2.4GHz 4GB Installed Serial Attached SCSI
SKU: 532020-B21
Price: $194.74
581774-001 - HP ProLiant BL460c G6 Server Blade Xeon 2.26GHz Serial Attached SCSI RAID Controller
SKU: 581774-001
Price: $1,012.05
570102-001 - HP ProLiant DL385 G6 Server 2 x Opteron 2.6GHz 24GB DDR2 SDRAM Serial Attached SCSI RAID Controller Rack
SKU: 570102-001
Price: $473.68
507404-001 - HP ProLiant DL185 G5 Server 1 x Opteron 2.5GHz 4GB DDR2 SDRAM Ultra ATA , Serial Attached SCSI RAID Controller Rack
SKU: 507404-001
Price: $1,173.68
3TK82AA - HP Serial Port (600/705/800) Serial for Computer, Notebook 1 x DB-9 Male Serial 1 x Serial Header
SKU: 3tk82aa
Price: $143.39
588184-B21 - HP Smart Array P410i 8-Port SAS Serial Attached SCSI/SAS Serial ATA/600 PCI Express 2.0 x8 Plug-in Card RAID Controller
SKU: 588184-B21
Price: $89.47
AP836A - HP StorageWorks Fibre Channel Serial ATA/300 Serial Attached SCSI (SAS) RAID Controller Card
SKU: AP836A
Price: $328.42
AQ697A - HP StorageWorks 800/1600GB (Removeable) LTO-4 Ultrium SB1760C SAS (Serial Attached SCSI) Tape Blade RackMountable Tape Drive
SKU: AQ697A
Price: $3,501.47
509363-001 - HP StorageWorks 800/1600GB (Removeable) LTO-4 Ultrium SB1760C SAS (Serial Attached SCSI) Tape Blade Rack-Mountable Tape Drive
SKU: 509363-001
Price: $3,677.95
399550-B21 - HP Smart Array P400i PCI Express x8 Serial Attached SCSI / SAS RAID Controller with 256MB Cache for ProLiant DL360 G5 Server
SKU: 399550-B21
Price: $71.58
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.