Replacement for K4Q78AA: Drop-In Alternatives We Stock
Looking for a replacement for the K4Q78AA (K4Q78AA - HP 18-Watts Quick Charge AC Adapter)? 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 K4Q78AA
| SKU | K4Q78AA |
|---|---|
| Product | K4Q78AA - HP 18-Watts Quick Charge AC Adapter |
| Current price | $175.50 |
| Stock status | In Stock |
| Detail page | View K4Q78AA › |
Drop-in replacements for K4Q78AA
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.
718164-B21 - HP 1.2TB 10000RPM SAS 6GB/s Hot-Pluggable Quick Release Dual Port 2.5-inch Hard Drive
SKU: 718164-B21
Price: $65.26
718293-001 - HP 1.2TB 10000RPM SAS 6GB/s Hot-Pluggable Quick Release Dual Port 2.5-inch Hard Drive
SKU: 718293-001
Price: $65.26
625618-006 - HP 1TB 7200RPM SATA 6GB/s Quick Release MidLine 2.5-inch Hard Drive
SKU: 625618-006
Price: $173.68
718180-B21 - HP 240GB SATA 6GB/s Value Endurance Quick-Release Enterprise 2.5-inch Solid State Drive
SKU: 718180-B21
Price: $194.74
718301-001 - HP 120GB SATA 6GB/s Value Endurance Quick-Release Enterprise Boot 2.5-inch Solid State Drive
SKU: 718301-001
Price: $200.00
718295-001 - HP 240GB SATA 6GB/s Value Endurance Quick-Release Enterprise 2.5-inch Solid State Drive
SKU: 718295-001
Price: $205.26
718332-B21 - HP 1TB 7200RPM SATA 6GB/s MidLine Quick Release 2.5-inch Hard Drive
SKU: 718332-B21
Price: $254.45
718320-B21 - HP 4TB 7200RPM SATA 6GB/s MidLine Quick Release 3.5-inch Hard Drive
SKU: 718320-B21
Price: $259.89
718681-001 - HP 900GB 10000RPM SAS 6GB/s Hot-Pluggable Dual Port Quick Release 2.5-inch Hard Drive
SKU: 718681-001
Price: $296.30
718174-B21 - HP 120GB SATA 6GB/s Value Endurance Quick-Release Enterprise Boot 2.5-inch Solid State Drive
SKU: 718174-B21
Price: $369.84
718297-001 - HP 480GB SATA 6GB/s Value Endurance Quick-Release Enterprise 2.5-inch Solid State Drive
SKU: 718297-001
Price: $525.96
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.