Replacement for 516011-B21: Drop-In Alternatives We Stock
Looking for a replacement for the 516011-B21 (516011-B21 - HP 25-Bay SFF Drive Cage Kit for ProLiant DL180 G6)? 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 516011-B21
| SKU | 516011-B21 |
|---|---|
| Product | 516011-B21 - HP 25-Bay SFF Drive Cage Kit for ProLiant DL180 G6 |
| Current price | $170.53 |
| Stock status | In Stock |
| Detail page | View 516011-B21 › |
Drop-in replacements for 516011-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.
687961-001 - HP 25-Bay SFF Drive Cage Assembly with Backplane for ProLiant DL380e G8 Server
SKU: 687961-001
Price: $155.79
388255-B21 - HP 2-Bay Ultra2/Ultra3 Drive Cage for ProLiant 1600 Server
SKU: 388255-B21
Price: $110.53
258051-001 - HP Internal 2 Bay Hot Swappable SCSI Drive Cage for ProLiant Server
SKU: 258051-001
Price: $121.05
253761-001 - HP Internal 2 Bay Hot Swappable Wide Ultra2 Ultra3 SCSI Drive Cage for ProLiant Server
SKU: 253761-001
Price: $121.05
258051-501 - HP 2 BAY Hot Swappable Wide ULTRA2/ULTRA3 SCSI Internal Drive Cage for ProLiant Server
SKU: 258051-501
Price: $121.05
272825-001 - HP 2 Bay Ultra2 SCSI Single Bus Drive Cage for ProLiant Server
SKU: 272825-001
Price: $147.37
507254-001 - HP 12-Bay 2U Hard Drive Cage Assembly for ProLiant DL180 G6
SKU: 507254-001
Price: $194.74
794878-001 - HP 2-Bay 2.5-inch Hard Drive Cage for ProLiant XL250a Gen9 Server
SKU: 794878-001
Price: $233.68
661898-001 - HP 4-Bay 2.5-inch Backplane with Cage for ProLiant SL2505 Server
SKU: 661898-001
Price: $200.00
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.