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| Manufacturer | Cisco |
| Manufacturer Part # | AIR-RM21A-A-K9 |
| Cost Central Item # | 10117666 |
| Product Description | Cisco Aironet 802.11a Radio Module - Network adapter - CardBus - 802.11a |
| Device Type | Network adapter |
| Form Factor | Plug-in module |
| Interface (Bus) Type | CardBus |
| Approximate Dimensions (WxDxH) | 3.5 in x 4.9 in x 1.6 in |
| Approximate Weight | 0.2 lbs |
| Localization | Canada, United States |
| Data Link Protocol | IEEE 802.11a |
| Data Transfer Rate | 54 Mbps |
| Frequency Band | 5 GHz |
| Compliant Standards | IEEE 802.11a, IEEE 802.1x, Wi-Fi CERTIFIED |
| Manufacturer Warranty | 1 year warranty |