Amazon.com: SABRENT 4-Port USB 3.0 Hub for iMac Slim Uni-Body (HB-IMCU) : Electronics
Sabrent Premium 3 Port Aluminum USB 3.0 Hub with Multi-in-1 Card Reader (12" Cable) for iMac, All MacBooks, Mac Mini, or Any PC (HB-MACR) : Amazon.ca: Electronics
Adding USB3.0 to late 2009 iMac (11,1) | MacRumors Forums
Can I use a Mid 2011 27 inch iMac (Thunderbolt) as a display for a PC? - Ask Different
Differences Between Mid-2011 and Late 2012 Aluminum iMac: EveryMac.com
Repairing a Bad USB Port on a Late-2011 15" MacBook Pro - YouTube
Looking to connect a mid 2011 iMac to an external monitor, these are my connections available. What are my options? : r/applehelp
Identify your iMac model - Apple Support
Can I connect my iMac 27" mid-2011 to a 2… - Apple Community
Identify the ports on your Mac - Apple Support
Which Macs have Thunderbolt Ports? - Transcend | Especialista en productos de almacenamiento y multimedia
USB 3.0 for iMac mid 2011 | MacRumors Forums
Apple updates iMacs with Sandy Bridge processors, Thunderbolt ports, FaceTime HD camera and more - 9to5Mac
New Satechi USB-C Slim Dock Expands Storage And Extends USB Ports On The 24″ iMac - IMBOLDN
The 27-inch Apple iMac Review (2011)
Mac mini (Mid 2011) - Technical Specifications
What are the ports on your MacBook? - Laptop/Mobile Service Center