Replacement for 123135-B21: Drop-In Alternatives We Stock
Looking for a replacement for the 123135-B21 (123135-B21 - HP Wide Ultra2/Ultra3 Simplex/Duplex Drive Cage Option Kit for ProLiant 3000 Server)? 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 123135-B21
| SKU | 123135-B21 |
|---|---|
| Product | 123135-B21 - HP Wide Ultra2/Ultra3 Simplex/Duplex Drive Cage Option Kit for ProLiant 3000 Server |
| Current price | $265.26 |
| Stock status | In Stock |
| Detail page | View 123135-B21 › |
Drop-in replacements for 123135-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.
382157-B21 - HP Wide Ultra2 SCSI Drive Cage Option Kit for ProLiant 3000 Server
SKU: 382157-B21
Price: $110.53
387087-001 - HP / Compaq Simplex Wide Ultra2 / Ultra3 SCSI Disk Drive Cage (with ten 1 inch drive bays)
SKU: 387087-001
Price: $160.00
328695-001 - HP Wide Ultra2 Drive Cage with Simplex SCSI Backplane Board for ProLiant 3000 Server
SKU: 328695-001
Price: $194.74
405154-B21 - HP PCI-X Riser Cage Option Kit for HP ProLiant DL360 G4 Server
SKU: 405154-B21
Price: $182.37
012314-001 - HP PCI-Express Riser Option Kit with Cage for DL380-G4 / DL380-G4 Server
SKU: 012314-001
Price: $831.42
144087-001 - HP 2 Bay LVD Internal Ultra2 Drive Cage with SCSI Simplex Backplane Board Compatible for ProLiant and Tasksmart C-Series
SKU: 144087-001
Price: $89.47
157007-B21 - HP 2-Bay LVD Ultra2 Drive Cage with SCSI Simplex Backplane Board
SKU: 157007-B21
Price: $89.47
262171-001 - HP Hot-Swap Hard Drive Cage with SCSI Simplex Backplane Board for ProLiant Server
SKU: 262171-001
Price: $96.84
365665-001 - HP Hard Drive Cage with SCSI Simplex Backplane for ProLiant Server
SKU: 365665-001
Price: $131.58
366862-001 - HP 6-Bay Hard Drive Cage with SCSI Simplex Backplane for ProLiant Server
SKU: 366862-001
Price: $138.95
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.