Sabrent Premium 4-Port USB 3.0 Hub for iMac (2012 and later)
iMac (late 2013) boot from usb slow | MacRumors Forums
Apple iMac (27-inch, September 2013) review: New processors and faster Wi-Fi for Apple's slim desktop - CNET
Late 2013 iMac review: Faster than before, but the gains over previous models are modest | Macworld
Amazon.com: Cateck iMac Hub Aluminum USB Hub Adapter Docking Station with Micro SD & Micro SD Card Reader Combo and 3 USB 3.0 Port Compatible with 2021 iMac and iMac Pro (Upgrade
iMac (21.5-inch, Late 2013) - Technical Specifications
Acasis 10Gbps to Mac SSD Enclosure for Apple MacBook Air Pro, iMac fro – ACASIS Electronics
iMac (late 2013) boot from usb slow | MacRumors Forums
Restored Apple iMac 21.5-inch 2.9GHZ Quad Core i5 (Late 2013) ME087LL/A 8 GB DDR3 1 TB HDD 1920 x 1080 Display Sierra 10.12 Includes Keyboard and Mouse (Refurbished) - Walmart.com
New CPUs, faster Wi-Fi, same flaws: Apple's 2013 iMac reviewed | Ars Technica
Apple iMac 21.5-inch 1.6GHz Core i5 (Late 2015) | mac of all trades
Amazon.com: TWOPAN USB C Hub Multiport Adapter for iMac, 6 in 1 USB C to USB Adapter iMac 2023/2021 iMac M3/M1, USB Hub with USB 3.0 Port, Micro/SD Card Readers & Multi
Apple 27" iMac Desktop Computer (Late 2013) Z0PF-ME0881 B&H
Apple iMac (27-inch, September 2013) review: New processors and faster Wi-Fi for Apple's slim desktop - CNET
Apple iMac 27-Inch (2013) Review - SlashGear
Apple 27" iMac Desktop Computer (Late 2013) B&H Photo Video
Amazon.com: SABRENT 4-Port USB 3.0 Hub for iMac Slim Uni-Body (HB-IMCU) : Electronics
Amazon.com: USB C 3.2 Gen SSD Enclosure for 12+16 PIN MacBook Air/Pro SSDs,MacBook SSD Enclosure Supports for 2013-2017 MacBook Air, 2013-2015 MacBook Pro Retina, 2013-2014 iMac, 2013 Mac Pro, 2014 Mac Mini : Electronics