Differences

This shows you the differences between two versions of the page.

--- keyboard:apple_extended_keyboard_ii [04 Feb 2024 23:07] – darkwitchclaire
+++ keyboard:apple_extended_keyboard_ii [28 Apr 2026 01:47] (current) – frutiger
@@ Line 4: / Line 4: @@
 |  **Apple Extended Keyboard II**  ||
-| {{ :keyboard:asie-aekii-1.jpg?300&detail |An AEKII}} ||
+| {{ :keyboard:asie-aekii-1.jpg?300 |An AEKII}} ||
-| **Switch** | [[switch:alps_skcm_ivory|Alps SKCM Ivory]]\\ [[switch:alps_skcm_white_ivory|Alps SKCM White Ivory]] \\ [[switch:alps_skcl_lock|Alps SKCL Lock]] |
+| **Switch** | [[switch:alps_skcm_tan|Alps SKCM Salmon]] \\ [[switch:alps_skcm_ivory|Alps SKCM Ivory]] \\ [[switch:alps_skcm_white_ivory|Alps SKCM White Ivory]] \\ [[switch:alps_skcl_lock|Alps SKCL Lock]] |
 | **Sense method** | Metal contact |
 | **Protocol** | ADB |
@@ Line 17: / Line 17: @@
 ==== Construction & Changes ====
 === Case & Internals ===
 The case is divided into two halves, a top and bottom-case, as well as the internal assembly. The top-case is secured by a single screw positioned at the back.
 Compared to its predecessor, the [[Apple Extended Keyboard]], the keyboard has had a few notable changes in terms of case design:
   * The case has a curvy "S" shape to the side, rather than the single upwards swoop on the [[Apple Extended Keyboard]].
   * The Apple logo is located at the top-left, rather than on the bottom-left.
@@ Line 27: / Line 29: @@
 === Switches ===
-The Apple Standard Keyboard initially came equipped with the [[switch:alps_skcm_ivory|Alps SKCM Ivory]], while later models came with its replacement, the [[switch:alps_skcm_white_ivory|Alps SKCM White Ivory]].
-The Caps Lock key is always replaced by a latching switch, namely the [[switch:alps_skcl_lock|Alps SKCL Lock]] switch.
+The **Apple Extended Keyboard II** initially came equipped with [[switch:alps_skcm_tan|Alps SKCM Salmon]] on US-made units before switching to dampened switches during the 28th week of 1990. Units made in the US or Mexico with dampened switches will include an 🅂 symbol on one or both rear labels. All units made in Ireland (ISO-layout) come equipped with dampened switches. [[switch:alps_skcm_ivory|Alps SKCM Ivory]] switches were used up until early 1995 when they were replaced by [[switch:alps_skcm_white_ivory|Alps SKCM White Ivory]].
+The Caps Lock key always uses a [[switch:alps_skcl_lock|Alps SKCL Lock]] latching switch.
+=== Switch Identification ===
+Date of manufacture can be determined from the serial number sticker on the rear. For units manufactured in the US, the format **APywwxxx%MO312** is used, where:
+  * **y** is the last digit of the year
+  * **ww** is the week number
+  * **xxx** is an alphanumeric serial
+For example: **AP0112EL%MO312** would be from the 11th week of 1990.
+Switch type can be inferred from date of manufacture and other information present on the rear labels:
+  * [[switch:alps_skcm_tan|Alps SKCM Salmon]] switches are found in models manufactured in U.S.A. with ©1989 or ©1990 with no 🅂 symbol present and a serial number indicating manufacture no later than week 28 of 1990.
+  * [[switch:alps_skcm_ivory|Alps SKCM Ivory]] switches are found in models manufactured in Ireland with ©1989 or models manufactured in U.S.A. with ©1990 and an 🅂 symbol present on one or both rear labels.
+  * [[switch:alps_skcm_white_ivory|Alps SKCM White Ivory]] switches are found in models manufactured in U.S.A., Mexico, or Ireland with ©1995.
 === Keycaps ===
 The keycaps are made primarily from PBT plastic except for the spacebar, which was made in ABS plastic. They boast a unique profile exclusive to Apple keyboards of that era, such as the [[Apple Standard Keyboard]] and [[Apple Extended Keyboard]].
 However, unique to the **Apple Extended Keyboard II**, the "Power" keycap has flat profile. This differs from its predecessor, which had the same profile as all the other keycaps in its row.
@@ Line 45: / Line 63: @@
 == Apple Extended Keyboard II (M3501B, UK) ==
   * FCC ID: BCGM3501
   * Made in Ireland
 <gallery>
 keyboard:asie-aekii-1.jpg
@@ Line 54: / Line 74: @@
 </gallery>
-\\
+== Apple Extended Keyboard II (M3501, US) ==
+  * FCC ID: BCGM3501
+  * Made in U.S.A. ©1990
+  * [[switch:alps_skcm_tan|Alps SKCM Salmon]] switches
+<gallery>
+keyboard:apple_aekii-us.jpg
+keyboard:apple_aekii-us_labels.jpg
+keyboard:apple_aekii-us_switch.jpg
+</gallery>
+\\
+{{tag>keyboard:sense-contact keyboard:protocol-adb keyboard:oem-alps keyboard:oem-apple protocol-adb keyboard:keycaps-dyesub}}
-{{tag>keyboard:sense-contact keyboard:protocol-adb keyboard:oem-apple protocol-adb keyboard:keycaps-dyesub}}