"AirDrop Compatible Card Swap
My MacPro 1,1 is running Lion but without AirDrop.
I used the Aug 4 list of AirDrop supported cards (link below) and started searching. I found one (on ebay) for under $16 (listed as a New Apple Atheros Dual-Band AR9280 AR5BXB92 AGN 300Mbps). I just swapped out my OEM Airport Extreme card, the new one works fine.

Thanks again for all the useful info posted for us.
-David C."

All the Thanks go to the readers. (I'm nothing but a liability the last year.)
Here's links to some recent posts on the subject of AirDrop compatible cards/swaps:

• Cheap (under $20) AirDrop Compatible card (Broadcom BCM94322MC)
• More on AirDrop Compatible Card Swaps - w/List of Supported card models
• 2007 Mac Pro owner notes on AirDrop compat. Card Swap

• Migration Assistant Update for Mac OS X Leopard (10.5.x)
  (The Migration Asst Update for Snow Leopard released last month)
• Review of Mac Mini as an HTPC
• SSD Benchmarks: MacBook Air 2010 vs MacBook Air 2011 with/without Lion Encryption
• (Short) review of MacBook Air 11in
• Kingston Wi-Drive Review: Add Storage To iOS Devices
• OWC Radio #58 (new macs, Lion, Thunderbolt...)
• (Security) Updates for Adobe Flash, Shockwave, AIR
• Did Adobe hide 400 vulnerability fixes in latest Flash Player patch?
• Black Hat: 'OS X networks are significantly more vulnerable' (Zdnet click bait of the day)
• OWC Represents 'Voice Of Consumers' SSD Usage at Flash Memory Summit 2011
• Vudu Avoids Apple Payday, Launches iPad Mobile Site
• Amazon sidesteps Apple with HTML5 'Kindle Cloud Reader'

• Bluetooth: How to set up your Apple Wireless Mouse or Magic Trackpad using setup assistant
• MacBook Pro (Early 2011) and MacBook Air (Mid 2011): Spotlight indexing may make the fans run
• MacBook Air (Late 2008 and Mid 2009): How to 'Erase and Install' using Remote Install Mac OS X
• Apple Portables: How to use your computer in closed clamshell (display closed) mode with an external display
• Apple Portables: How to determine that your portable has a Multi-Touch trackpad
• OS X Lion: FaceTime - "There was an error processing registration" when signing in
• OS X Lion Server: Unable to use Bluetooth Keyboard in Server Assistant
• OS X Lion (Italian): Option to erase CD/RW does not appear in Disk Utility
• Apple TV (2nd generation): How to enable VoiceOver
• Apple TV: Depending on my country, what content can I buy or rent from the iTunes Store?
• iTunes Store: How to enable Automatic Downloads
• Troubleshooting Automatic Downloads for purchased Apps, Music, and Books
• iPod: "Enable Disk Use" dimmed in Preferences
• Troubleshooting issues with no audio from built-in speakers on Macs
• Logic Pro, Logic Express: Disable or Remove Audio Unit plug-ins to troubleshoot issues
• Soundtrack Pro 3: Troubleshooting Audio Unit plug-in issues
• Authentication issues when connecting to a Lion SMB server
• OS X Lion: About Windows Migration Assistant
• Apple TV (2nd generation): Third-party content provider information
• How to back up your media in iTunes
• Downloading past purchases from the App Store, iBookstore, and iTunes Store
• Troubleshooting iPhone hardware
• iOS: 'Mailbox Locked', account is in use on another device, or prompt to re-enter POP3 password
• iTunes for Windows: Troubleshooting security software issues

• New USB Power Spec could deliver up to 100W
• Walmart to Exit MP3 Business on August 29
• Microsoft Fixes 22 Flaws in August Patch Tuesday
• Vizio's 8-inch Android tablet in some stores now, $299.99
• The Best Free VPN Clients
• Don't freak out, Facebook didn't publish your mobile contacts/Phone numbers
• Survey Finds Smartphone Apps Store Too Much Personal Data
• Team Fortress 2 Update Released
• Counter-Strike: Source Beta Update Released (and an earlier one Tues)
• Left 4 Dead 2 Update Released
• Portal 2 "Exile Vilify" Music Video Contest Winners Announced