Replacement for CSP-SD400G12S4-EP: Drop-In Alternatives We Stock
Looking for a replacement for the CSP-SD400G12S4-EP (CSP-SD400G12S4-EP - Cisco Enterprise Performance 400GB Enterprise Multi-Level Cell (eMLC) SAS 12Gb/s 2.5-inch Solid State Drive)? 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 CSP-SD400G12S4-EP
| SKU | CSP-SD400G12S4-EP |
|---|---|
| Product | CSP-SD400G12S4-EP - Cisco Enterprise Performance 400GB Enterprise Multi-Level Cell (eMLC) SAS 12Gb/s 2.5-inch Solid State Drive |
| Current price | $8,615.00 |
| Stock status | In Stock |
| Detail page | View CSP-SD400G12S4-EP › |
Drop-in replacements for CSP-SD400G12S4-EP
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.
UCS-SD400G0KS2-EP - Cisco Enterprise Performance 400GB Enterprise Multi-Level Cell (eMLC) SAS 6Gb/s 2.5-inch Solid State Drive
SKU: UCS-SD400G0KS2-EP
Price: $344.33
UCS-SD16T12S2-EP - Cisco Enterprise Performance 1.6TB Enterprise Multi-Level Cell (eMLC) SAS 12Gb/s 2.5-inch Solid State Drive
SKU: UCS-SD16T12S2-EP
Price: $5,150.05
HX-SD480G12S3-EP - Cisco Enterprise Performance 480GB Multi-Level Cell (MLC) SATA 6Gb/s Hot-Swappable 2.5-inch Solid State Drive for Hyperflex HX2
SKU: HX-SD480G12S3-EP
Price: $1,464.82
E100D-SSD400-EMLC - Cisco 400GB Enterprise Multi-Level Cell (eMLC) SAS Hot-Swappable 2.5-inch Solid State Drive
SKU: E100D-SSD400-EMLC
Price: $1,861.67
E100S-SSD400-EMLC - Cisco 400GB Enterprise Multi-Level Cell (eMLC) SAS Hot-Swappable 2.5-inch Solid State Drive
SKU: E100S-SSD400-EMLC
Price: $1,861.67
HX-PCI25-40010 - Cisco 400GB Multi-Level Cell (MLC) PCI Express 3.0 x4 Hot-Swappable NVMe High Endurance U.2 2.5-inch Solid State Drive
SKU: HX-PCI25-40010
Price: $3,037.83
HX-SD400G12S4-EP - Cisco 400GB Multi-Level Cell SAS 12Gb/s 2.5-inch Solid State Drive for Hyperflex HXAF240c-M4
SKU: HX-SD400G12S4-EP
Price: $8,615.00
CSP-MR-1X162RU-A - Cisco 16GB DDR4-2133MHz PC4-17000 ECC Registered CL15 288-Pin DIMM 1.2V Dual Rank Memory Module
SKU: CSP-MR-1X162RU-A
Price: $142.30
CSP-MR-1X161RV-A - Cisco 16GB DDR4-2400MHz PC4-19200 ECC Registered CL17 288-Pin DIMM 1.2V Single Rank Memory Module
SKU: CSP-MR-1X161RV-A
Price: $182.54
CSP-MR-X16G1RS-H - Cisco 16GB PC4-21300 DDR4-2666MHz ECC Registered CL19 RDIMM 1.2V Single-Rank Memory Module
SKU: CSP-MR-X16G1RS-H
Price: $264.29
CSP-ML-1X324RV-A - Cisco 32GB DDR4-2400MHz PC4-19200 ECC Registered CL17 288-Pin Load Reduced DIMM 1.2V Quad Rank Memory Module
SKU: CSP-ML-1X324RV-A
Price: $342.11
CSP-MR-X32G2RS-H - Cisco 32GB PC4-21300 DDR4-2666MHz ECC Registered CL19 RDIMM 1.2V Dual-Rank Memory Module
SKU: CSP-MR-X32G2RS-H
Price: $342.11
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.