Replacement for AIR-ANT2566D4M-RS: Drop-In Alternatives We Stock
Looking for a replacement for the AIR-ANT2566D4M-RS (AIR-ANT2566D4M-RS - Cisco Aironet 802.11b 2.4Ghz 11Mbs Wireless LAN PCI Adapter Card)? 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 AIR-ANT2566D4M-RS
| SKU | AIR-ANT2566D4M-RS |
|---|---|
| Product | AIR-ANT2566D4M-RS - Cisco Aironet 802.11b 2.4Ghz 11Mbs Wireless LAN PCI Adapter Card |
| Stock status | In Stock |
| Detail page | View AIR-ANT2566D4M-RS › |
Drop-in replacements for AIR-ANT2566D4M-RS
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.
AIR-PI21AG-A-K9 - Cisco Aironet 802.11a/b/g Low Profile PCI Wireless Adapter
SKU: AIR-PI21AG-A-K9
Price: $129.39
AIR-BR1310G-A-K9-R - Cisco Aironet 1310 802.11g Wireless Lan Outdoor Access Point
SKU: AIR-BR1310G-A-K9-R
Price: $188.13
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
AIR-WLC2125-K9 - Cisco Aironet 2125 8-Port 10/100Base-TX Wireless LAN Controller
SKU: AIR-WLC2125-K9
Price: $276.32
AIR-WLC2106-K9 - Cisco Aironet 2106 Wireless POE LAN Controller Network Management Device
SKU: AIR-WLC2106-K9
Price: $324.71
AIR-CB21AG-A-K9 - Cisco Aironet 802.11a/b/g Wireless Cardbus Network Adapter
SKU: AIR-CB21AG-A-K9
Price: $150.71
AIR-CB21AG-E-K9 - Cisco Aironet 802.11a/B/G Wireless Cardbus Adapter
SKU: AIR-CB21AG-E-K9
Price: $212.78
AIR-CT5508-12-K9 - Cisco Aironet 5508 Wireless Controller for up to 12 Cisco Access Points
SKU: AIR-CT5508-12-K9
Price: $435.39
PWR-WLC2100-AC - Cisco Wireless Lan Controller Power Supply for Aironet 2100 Series
SKU: PWR-WLC2100-AC
Price: $161.11
AIR-AP1852E-A-K9C-BR - Cisco Bracket for Aironet 1852 Wireless Access Point
SKU: AIR-AP1852E-A-K9C-BR
Price: $44.21
AIR-AP1852I-A-K9C-BR - Cisco Bracket for Aironet 1852 Wireless Access Point
SKU: AIR-AP1852I-A-K9C-BR
Price: $44.21
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.