Replacement for 635914-B21: Drop-In Alternatives We Stock
Looking for a replacement for the 635914-B21 (635914-B21 - HP Storage Bay Adapter Internal 2 x Total Bay 2 x 2.5-inch Bay)? 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 635914-B21
| SKU | 635914-B21 |
|---|---|
| Product | 635914-B21 - HP Storage Bay Adapter Internal 2 x Total Bay 2 x 2.5-inch Bay |
| Current price | $157.76 |
| Stock status | In Stock |
| Detail page | View 635914-B21 › |
Drop-in replacements for 635914-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.
AP838A - HP AP838A Storage Enclosure Rack-mountable 12 x Total Bay 12 x 3.5-inch Bay
SKU: AP838A
Price: $345.26
C8S07B - HP Business Class Storage Drive Enclosure RDX Technology External 1 X Total Bay USB 3.0
SKU: C8S07B
Price: $335.46
506927-B21 - HP Hard Drive Cage Storage Bay Adapter 8 x 3.5-inch 1/3H Front Accessible Hot-pluggable Internal
SKU: 506927-B21
Price: $326.32
AP839B - HP StorageWorks Modular Smart Array P2000 2.5-inch Drive Bay Chassis Storage Enclosure 24-Bay
SKU: AP839B
Price: $1,152.42
AP838B - HP Modular Smart Array P2000 Twelve Large (LFF) 3.5-inch Drive Bay Chassis Storage Enclosure 12-Bay- 2u Rackmountable
SKU: AP838B
Price: $1,969.05
C8R12A - HP Drive Enclosure Rack-mountable 12 x Total Bay SAS Controller Fibre Channel
SKU: C8R12A
Price: $717.89
174631-B21 - HP 10 Bay Storage Works Ultra 3 Single Bus Enclosure Model 4310 Rack Storage Unit
SKU: 174631-B21
Price: $1,050.53
B7E19A - HP StoreVirtual 4330 1TB MDL SAS Storage 8 x Total Bays 8 TB HDD (8 x 1 TB)
SKU: B7E19A
Price: $1,626.32
AP789B - HP StorageWorks X1600 Network Storage Server 1 x Intel Xeon E5520 2.26 GHz 12 x Total Bays 12 TB HDD (12 x 1 TB) 6 GB RAM RAID Supported
SKU: AP789B
Price: $22,197.89
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.