Replacement for K5J28AA: Drop-In Alternatives We Stock
Looking for a replacement for the K5J28AA (K5J28AA - HP 4-Bay High Density Storage Kit for Z840 Workstation)? 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 K5J28AA
| SKU | K5J28AA |
|---|---|
| Product | K5J28AA - HP 4-Bay High Density Storage Kit for Z840 Workstation |
| Current price | $1,015.37 |
| Stock status | In Stock |
| Detail page | View K5J28AA › |
Drop-in replacements for K5J28AA
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.
635914-B21 - HP Storage Bay Adapter Internal 2 x Total Bay 2 x 2.5-inch Bay
SKU: 635914-B21
Price: $157.76
Kingston KTH8400/4G 4GB Kit (4 X 1GB) ECC Registered High-Density 278-Pin System Specific DIMM Memory for HP
SKU: KTH8400-4G
Price: $77.63
A8088BR - HP 2GB Kit (2 X 1GB) 133MHz PC133 ECC Registered High Density 278-Pin DIMM Memory
SKU: A8088BR
Price: $83.88
A5797A - HP 512MB Kit (2x256MB) PC133 133MHz ECC Registered High-Density CL2 278-Pin DIMM Memory for L-Class 9000 Server
SKU: A5797A
Price: $96.84
A5198A - HP 2GB Kit (4x512MB) PC133 133MHz ECC Registered High Density 278-Pin DIMM Memory
SKU: A5198A
Price: $97.14
A4923A - HP 1GB Kit (2x512MB) PC120 120MHz ECC Registered 278-Pin High-Density DIMM Memory for 9000 and N-Class Servers
SKU: A4923A
Price: $97.14
A5798A - HP 1GB Kit (2x512MB) PC133 133MHz ECC Registered High-Density 278-Pin System Specific DIMM Memory for 9000 A / L Class Servers
SKU: A5798A
Price: $97.14
A6802A - HP 1GB Kit (4x256MB) PC133 133MHz ECC Registered High-Density 278-Pin SyncDRAM DIMM Memory for rp8420/rp7410/rx7620 Server
SKU: A6802A
Price: $127.16
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.