Replacement for K398K: Drop-In Alternatives We Stock
Looking for a replacement for the K398K (K398K - Dell Dual Port 10GbE CX4 Expansion Adapter Card)? Pro Disk Network ships Dell 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 K398K
| SKU | K398K |
|---|---|
| Product | K398K - Dell Dual Port 10GbE CX4 Expansion Adapter Card |
| Current price | $165.79 |
| Stock status | In Stock |
| Detail page | View K398K › |
Drop-in replacements for K398K
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.
Dell K4D64 Dell 0K4D64 / K4D64 Dual-Port Boss-s1 Boot-Optimized PCI Express Server Storage Adapter Card for M.2 SATA SSD
SKU: K4D64
Price: $184.21
463-2813 - Dell Dual Port 40Gb Ethernet QSFP+ Expansion Module for N4032 / N4032F
SKU: 463-2813
Price: $1,378.55
406-BBBB - Dell QLE2662 16GB Dual Port Fibre Channel Host Bus Adapter Card Only
SKU: 406-BBBB
Price: $50.53
557M9 - Dell Broadcom 5720 NIC Gigabit Ethernet Dual Port 1GbE PCI Express 2.0 X2 Network Interface Card Adapter
SKU: 557M9
Price: $50.53
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.