Replacement for S400A001L: Drop-In Alternatives We Stock
Looking for a replacement for the S400A001L (S400A001L - Cisco 400-Watts AC 100-240 V Power Supply for ASA5512X ASA5515X ASA5525X)? Pro Disk Network ships Cisco 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 S400A001L
| SKU | S400A001L |
|---|---|
| Product | S400A001L - Cisco 400-Watts AC 100-240 V Power Supply for ASA5512X ASA5515X ASA5525X |
| Current price | $573.26 |
| Stock status | In Stock |
| Detail page | View S400A001L › |
Drop-in replacements for S400A001L
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.
ASA-PWR-AC - Cisco 400-Watts AC 100-240 V Power Supply for ASA 5545-X 5555-X
SKU: ASA-PWR-AC
Price: $532.82
Cisco PWR-3900-AC/2 400-Watts 100 / 240V Secondary AC Power Supply For 3925/3945 Integrated Services Router
SKU: PWR-3900-AC-2
Price: $856.43
N9K-PAC-650W-B - Cisco 650-Watts AC 100-240 V Power Supply For Nexus 93128TX
SKU: N9K-PAC-650W-B
Price: $392.99
341-0375-05 - Cisco 400-Watts Power Supply For NEXUS NX-OS F-B AIRFLOW
SKU: 341-0375-05
Price: $128.95
34-0873-01 - Cisco 400-Watts Power Supply for 4003 / 4006 / 4008 Series
SKU: 34-0873-01
Price: $143.39
N2000-PAC-400W-V02 - Cisco 400-Watts Power Supply for Nexus NX-OS F-B Airflow
SKU: N2000-PAC-400W-V02
Price: $253.36
PWR-MS420-400AC-R - Cisco Meraki 400-Watts Power Supply For MS420 Meraki Switches
SKU: PWR-MS420-400AC-R
Price: $299.13
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.