Replacement for 688928-B21: Drop-In Alternatives We Stock
Looking for a replacement for the 688928-B21 (688928-B21 - HP Half Width Node Left Blank Kit for ProLiant s6500)? 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 688928-B21
| SKU | 688928-B21 |
|---|---|
| Product | 688928-B21 - HP Half Width Node Left Blank Kit for ProLiant s6500 |
| Current price | $189.47 |
| Stock status | In Stock |
| Detail page | View 688928-B21 › |
Drop-in replacements for 688928-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.
800289-001 - HP 1U Half Width Blank Filler Assembly for ProLiant XL170r Gen9 Server
SKU: 800289-001
Price: $170.53
612217-B21 - HP ProLiant Sl390s G7 Node Server- With No Cpu, No Ram, 2x Gigabit Ethernet, 1u Left Half Tray Node Server Cto
SKU: 612217-B21
Price: $232.82
612228-B21 - HP ProLiant Sl390s G7 Node Server- with No CPU No Ram 2x Gigabit Ethernet, Ilo-3, 4u Left Half Tray Node Server Cto
SKU: 612228-B21
Price: $1,077.84
654940-B21 - HP 2 Unit PCI Express Right Half Width Tray for ProLiant SL250s Gen8 Server
SKU: 654940-B21
Price: $307.37
625539-B21 - HP ProLiant SL390s G7 1U Right Half Width Tray X5650 1P 12GB Server
SKU: 625539-B21
Price: $485.50
638885-B21 - HP ProLiant SL170s G6 1U Right Half Width Tray E5649 1P 12GB No HDD
SKU: 638885-B21
Price: $488.21
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.