Editing Apple Extended Keyboard II (section)

===Model numbers===
There are two model numbers: M0312 and M3501.
The FCC IDs are BCGM0312{{Citation needed|reason=There is no evidence of this FCC ID|date=September 2021}} and BCGM3501 respectively.

Citation: 
ebay https://www.ebay.com/itm/322584991800, from dealer "jonathangoldman" (retrieved 01/01/2024).  This auction was for multiple new-in-box keyboards.  The box listed in the ad is very clearly labeled "Apple Extended Keyboard."  A black and white sticker that reads "M0312" is clearly visible with a bar code "718908001691."  "Made in Mexico" is also on the sticker.  "Copyright 1991" is printed on the box.

Another ebay auction, https://www.ebay.com/itm/402782801083, from dealer "appleantiques" (retrieved 01/01/2024) has a listing selling multiple Apple Extended Keyboard IIs: "For your consideration at this wonderful auction is a used vintage beige Apple Extended Keyboard II, model numbers M3501 and M0312. Fully tested and working. Keyboard has WHITE switches - I do not have any of these keyboards with salmon or orange alps switches.  Product shown in photo shows the shape for this model of keyboard, and is not the precise unit being shipped. Keyboard has manufacture dates of 1990 and 1995."

There is a backup of a page from clickykeyboards.com at https://web.archive.org/web/20090103012904/http://www.clickykeyboards.com/index.cfm/fa/items.main/parentcat/9231/subcatid/0/id/312521 (from 2009; retrieved 01/01/2024).  It shows pictures of a box for an M0312, but the actual keyboard being sold is clearly labeled "M3501."  No year is shown in any of the pictures.

https://geekhack.org/index.php?topic=25972.0 (retrieved 01/01/2024) says that the M0312 has cream damped Alps switches.  There is also a lengthy discussion at https://geekhack.org/index.php?topic=4178.0 (retrieved 01/01/2024) comparing the M0312 to the common M3501.