In 2002 the first character of the serial number is 2, in 2003, 3 and so on. Weil-McLainPlease look on the outside jacket of the boiler for a CP Serial Number. It will have a bar code on it. Call (or email) Weil-McLain and they will tell you the date of manufacture. Phone: 219-879-6561 ask for Technical Services. Bac Cooling Tower Serial Number Age. 9/19/2019 22 Mar Welcome to BAC @ You! I’m Chris Walton, Supervisor Marketing Communications at The Baltimore Aircoil Company for the last 11 years. If you’re not familiar with the term Marketing Communications, you could say I’m the Company’s liaison to the social media world. You can then enter that serial number on the Check Coverage page to find your model. The original packaging may also show an Apple part number, such as MMQA2xx/A (“xx” is a variable that differs by country or region). You can match the Apple part number to one on the list below to find your model. A SUN (Service User Number, or sometimes referred to as an Originator ID) is a unique six-digit number used to identify a business paying or receiving money through a direct debit Bacs transaction. SUN details are kept in a database managed by Bacs.
Your Mac provides several tools to help you identify it. The simplest is About This Mac, available by choosing About This Mac from the Apple menu in the top left-hand corner of your screen. The other is the System Information app. Find out how to use these tools to identify your Mac.
If you don’t have your Mac or it doesn’t start up, use one of these solutions instead:
- Find the serial number printed on the underneath of your Mac, near the regulatory markings. It's also on the original packaging, next to the barcode label. You can then enter that serial number on the Check Coverage page to find your model.
- The original packaging may also show an Apple part number, such as MMQA2xx/A (“xx” is a variable that differs by country or region). You can match the Apple part number to one on the list below to find your model.
List of iMac models
iMac models are organised by the year when they were introduced, starting with the most recent. Click the model names to get detailed technical specifications or to view the accompanying user guide.
iMac models from 2012 or later can run the latest version of macOS. For models from before 2012, the latest compatible operating system is noted.
2020
iMac (Retina 5K, 27-inch, 2020)
Model Identifier: iMac20,1, iMac20,2
Part Numbers: MXWT2xx/A, MXWU2xx/A, MXWV2xx/A
Tech Specs: iMac (Retina 5K, 27-inch, 2020)
User Guide: iMac (Retina 5K, 27-inch, 2020)
2019
iMac (Retina 5K, 27-inch, 2019)
Model Label: iMac19,1
Part Numbers: MRQYxx/A, MRR0xx/A, MRR1xx/A
Tech Specs: iMac (Retina 5K, 27-inch, 2019)
User Guide: iMac (Retina 5K, 27-inch, 2019)
iMac (Retina 4K, 21.5-inch, 2019)
Model Label: iMac19,2
Part Numbers: MRT3xx/A, MRT4xx/A, MHK23xx/A
Tech Specs: iMac (Retina 4K, 21.5-inch, 2019)
User Guide: iMac (Retina 4K, 21.5-inch, 2019)
2017
iMac Pro
Model Label: iMacPro1,1
Part Numbers: MQ2Y2xx/A, MHLV3xx/A
Tech Specs: iMac Pro (2017)
User Guide: iMac Pro (2017)
iMac (Retina 5K, 27-inch, 2017)
Model Label: iMac18,3
Part Numbers: MNE92xx/A, MNEA2xx/A, MNED2xx/A
Tech Specs: iMac (Retina 5K, 27-inch, 2017)
User Guide: iMac (Retina 5K, 27-inch, 2017)
iMac (Retina 4K, 21.5-inch, 2017)
Model Label: iMac18,2
Part Numbers: MNDY2xx/A, MNE02xx/A
Tech Specs: iMac (Retina 4K, 21.5-inch, 2017)
User Guide: iMac (Retina 4K, 21.5-inch, 2017)
iMac (21.5-inch, 2017)
Model Label: iMac18,1
Part Numbers: MMQA2xx/A, MHK03xx/A
Tech Specs: iMac (21.5-inch, 2017)
User Guide: iMac (21.5-inch, 2017)
2015
iMac (Retina 5K, 27-inch, Late 2015)
Model Label: iMac17,1
Part Numbers: MK462xx/A, MK472xx/A, MK482xx/A
Tech Specs: iMac (Retina 5K, 27-inch, Late 2015)
User Guide: iMac (Retina 5K, 27-inch, Late 2015)
iMac (Retina 4K, 21.5-inch, Late 2015)
Model Label: iMac16,2
Part Numbers: MK452xx/A
Tech Specs: iMac (Retina 4K, 21.5-inch, Late 2015)
User Guide: iMac (Retina 4K, 21.5-inch, Late 2015)
iMac (21.5-inch, Late 2015)
Model Label: iMac16,1
Part Numbers: MK142xx/A, MK442xx/A
Tech Specs: iMac (21.5-inch, Late 2015)
User Guide: iMac (21.5-inch, Late 2015)
iMac (Retina 5K, 27-inch, Mid 2015)
Model Label: iMac15,1
Part Numbers: MF885xx/A
Tech Specs: iMac (Retina 5K, 27-inch, Mid 2015)
User Guide: iMac (Retina 5K, 27-inch, Mid 2015)
2014
iMac (Retina 5K, 27-inch, Late 2014)
Model Label: iMac15,1
Part Numbers: MF886xx/A
Tech Specs: iMac (Retina 5K, 27-inch, Late 2014)
User Guide: iMac (Retina 5K, 27-inch, Late 2014)
iMac (21.5-inch, Mid 2014)
Model Label: iMac14,4
Part Numbers: MF883xx/A, MG022xx/A
Tech Specs: iMac (21.5-inch, Mid 2014)
User Guide: iMac (21.5-inch, Mid 2014)
2013
iMac (27-inch, Late 2013)
Model Label: iMac14,2
Part Numbers: ME086xx/A, ME088xx/A
Tech Specs: iMac (27-inch, Late 2013)
User Guide: iMac (27-inch, Late 2013)
iMac (21.5-inch, Late 2013)
Model Label: iMac14,1
Part Numbers: ME086xx/A, ME087xx/A
Tech Specs: iMac (21.5-inch, Late 2013)
User Guide: iMac (21.5-inch, Late 2013)
2012
iMac (27-inch, Late 2012)
Model Label: iMac13,2
Part Numbers: MD095xx/A, MD096xx/A
Tech Specs: iMac (27-inch, Late 2012)
User Guide: iMac (27-inch, Late 2012)
iMac (21.5-inch, Late 2012)
Model Label: iMac13,1
Part Numbers: MD093xx/A, MD094xx/A
Tech Specs: iMac (21.5-inch, Late 2012)
User Guide: iMac (21.5-inch, Late 2012)
2011
iMac (27-inch, Mid 2011)
Model Label: iMac12,2
Part Numbers: MC813xx/A, MC814xx/A
Newest compatible operating system: macOS High Sierra 10.13.6
Tech Specs: iMac (27-inch, Mid 2011)
User Guide: iMac (27-inch, Mid 2011)
iMac (21.5-inch, Mid 2011)
Model Label: iMac12,1
Part Numbers: MC309xx/A, MC812xx/A
Newest compatible operating system: macOS High Sierra 10.13.6
Tech Specs: iMac (21.5-inch, Mid 2011)
User Guide: iMac (21.5-inch, Mid 2011)
2010
iMac (27-inch, Mid 2010)
Model Label: iMac11,3
Part Numbers: MC510xx/A, MC511xx/A
Newest compatible operating system: macOS High Sierra 10.13.6
Tech Specs: iMac (27-inch, Mid 2010)
User Guide: iMac (27-inch, Mid 2010)
iMac (21.5-inch, Mid 2010)
Model Label: iMac11,2
Part Numbers: MC508xx/A, MC509xx/A
Newest compatible operating system: macOS High Sierra 10.13.6
Tech Specs: iMac (21.5-inch, Mid 2010)
User Guide: iMac (21.5-inch, Mid 2010)
Bac Serial Number Age
2009
iMac (27-inch, Late 2009)
Model Label: iMac10,1
Part Numbers: MB952xx/A, MB953xx/A
Newest compatible operating system: macOS High Sierra 10.13.6
Tech Specs: iMac (27-inch, Late 2009)
User Guide: iMac (27-inch, Late 2009)
iMac (21.5-inch, Late 2009)
Model Label: iMac10,1
Part Numbers: MB950xx/A, MC413xx/A
Newest compatible operating system: macOS High Sierra 10.13.6
Tech Specs: iMac (21.5-inch, Late 2009)
User Guide: iMac (21.5-inch, Late 2009)
iMac (24-inch, Early 2009)
Model Label: iMac9,1
Part Numbers: MB418xx/A, MB419xx/A
Newest compatible operating system: OS X El Capitan 10.11.6
Tech Specs: iMac (24-inch, Early 2009)
User Guide: iMac (24-inch, Early 2009)
Bac Cooling Tower Serial Number Age
iMac (20-inch, Early 2009)
Model Label: iMac9,1
Part Numbers: MB417xx/A, MC019xx/A
Newest compatible operating system: OS X El Capitan 10.11.6
Tech Specs: iMac (20-inch, Early 2009)
User Guide: iMac (20-inch, Early 2009)