# macOS Serial Number
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Apple devices manufactured after 2010 generally have **12-character alphanumeric** serial numbers, with the **first three digits representing the manufacturing location**, the following **two** indicating the **year** and **week** of manufacture, the next **three** digits providing a **unique** **identifier**, and the **last** **four** digits representing the **model number**. Serial number example: **C02L13ECF8J2** ### **3 - Manufacturing locations** | Code | Factory | | -------------- | -------------------------------------------- | | FC | Fountain Colorado, USA | | F | Fremont, California, USA | | XA, XB, QP, G8 | USA | | RN | Mexico | | CK | Cork, Ireland | | VM | Foxconn, Pardubice, Czech Republic | | SG, E | Singapore | | MB | Malaysia | | PT, CY | Korea | | EE, QT, UV | Taiwan | | FK, F1, F2 | Foxconn – Zhengzhou, China | | W8 | Shanghai China | | DL, DM | Foxconn – China | | DN | Foxconn, Chengdu, China | | YM, 7J | Hon Hai/Foxconn, China | | 1C, 4H, WQ, F7 | China | | C0 | Tech Com – Quanta Computer Subsidiary, China | | C3 | Foxxcon, Shenzhen, China | | C7 | Pentragon, Changhai, China | | RM | Refurbished/remanufactured | ### 1 - Year of manufacturing | Code | Release | | ---- | -------------------- | | C | 2010/2020 (1st half) | | D | 2010/2020 (2nd half) | | F | 2011/2021 (1st half) | | G | 2011/2021 (2nd half) | | H | 2012/... (1st half) | | J | 2012 (2nd half) | | K | 2013 (1st half) | | L | 2013 (2nd half) | | M | 2014 (1st half) | | N | 2014 (2nd half) | | P | 2015 (1st half) | | Q | 2015 (2nd half) | | R | 2016 (1st half) | | S | 2016 (2nd half) | | T | 2017 (1st half) | | V | 2017 (2nd half) | | W | 2018 (1st half) | | X | 2018 (2nd half) | | Y | 2019 (1st half) | | Z | 2019 (2nd half) | ### 1 - Week of manufacturing The fifth character represent the week in which the device was manufactured. There are 28 possible characters in this spot: **the digits 1-9 are used to represent the first through ninth weeks**, and the **characters C through Y**, **excluding** the vowels A, E, I, O, and U, and the letter S, represent the **tenth through twenty-seventh weeks**. For devices manufactured in the **second half of the year, add 26** to the number represented by the fifth character of the serial number. For example, a product with a serial number whose fourth and fifth digits are β€œJH” was manufactured in the 40th week of 2012. ### 3 - Uniq Code The next three digits are an identifier code which **serves to differentiate each Apple device of the same model** which is manufactured in the same location and during the same week of the same year, ensuring that each device has a different serial number. ### 4 - Serial number The last four digits of the serial number represent the **product’s model**. ### Reference {% embed url="https://beetstech.com/blog/decode-meaning-behind-apple-serial-number" %}
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