Replacement for C9800-40-K9: Drop-In Alternatives We Stock
Looking for a replacement for the C9800-40-K9 (C9800-40-K9 - Cisco Catalyst 9800-40 1U Rack-mountable Wireless Controller)? 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 C9800-40-K9
| SKU | C9800-40-K9 |
|---|---|
| Product | C9800-40-K9 - Cisco Catalyst 9800-40 1U Rack-mountable Wireless Controller |
| Stock status | In Stock |
| Detail page | View C9800-40-K9 › |
Drop-in replacements for C9800-40-K9
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.
C9800-AC-750W-R - Cisco 750-Watt AC Power Supply for Catalyst 9800-40
SKU: C9800-AC-750W-R
Price: $1,255.58
WS-P4603-2PSU - Cisco Catalyst 4000 Auxiliary Power Shelf For Catalyst 4006 Switch
SKU: WS-P4603-2PSU
Price: $619.67
RACKMOUNT-C2940 - Cisco 19-inch Rack-Mount Kit for Catalyst C2940 Switch
SKU: RACKMOUNT-C2940
Price: $150.71
C9400-LC-24XS - Cisco Catalyst 3850 Series 24 x Ports SFP+ 10GBase-T Layer 3 Managed 1U Rack-Mountable Gigabit Ethernet Line card Module
SKU: C9400-LC-24XS
Price: $7,661.50
C9400-LC-24S - Cisco Catalyst 3850 Series 24 x Ports SFP+ 10GBase-T Layer 3 Managed 1U Rack-Mountable Gigabit Ethernet Line card Module
SKU: C9400-LC-24S
Price: $8,893.08
MEM-8540CFLC20M - Cisco 20MB Compact Flash (CF) Memory Card with Software for 8540 Wireless LAN Controller
SKU: MEM-8540CFLC20M
Price: $116.33
AIR-PWR-5500-AC - Cisco 100-240V Redundant Power Supply for 5500 Series Wireless Controller
SKU: AIR-PWR-5500-AC
Price: $128.95
AIR-WLC4404-100-K9 - Cisco 4404 Wireless Lan Controller for up to 100 Access Points
SKU: AIR-WLC4404-100-K9
Price: $206.32
AIR-WLC4402-12-K9 - Cisco Aironet 4400 Series Wireless LAN Controller
SKU: AIR-WLC4402-12-K9
Price: $240.89
AIR-WLC4402-25-K9 - Cisco Aironet 4400 25AP Wireless LAN Controller
SKU: AIR-WLC4402-25-K9
Price: $274.75
74-10158-01 - Cisco UCS Dual-Port SAS Mezzanine RAID Controller for C240 M3 Rack Server
SKU: 74-10158-01
Price: $124.17
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.