Mac Usb Keyboard

11/26/2021by admin

Logitech - MX Keys Wireless Bluetooth Keyboard for Mac with Smart Illumination - Space Gray. Model: 920-009552. User rating, 4.8 out of 5 stars with 640 reviews. (640) Price Match Guarantee. Your price for this item is $ 99.99. Connect your keyboard to a different USB port. Try a different keyboard with your computer if possible, or your keyboard with a different Mac. Try logging into a different user account. If the issue does not occur when logged into a different user account, then troubleshoot for software issues.

Mac usb keyboard not working after sleep

Welcome Jaydon276,


Thank you for using Apple Support Communities. Based on your post, you're unable to use the USB keyboard when connected to your iMac. We'll do our best to assist with this.


Given that the keyboard is USB, it should connect fine and work with your iMac. No Bluetooth keyboard necessary. Since it's not working currently, we'd like to make sure you've tried the following: If your Mac doesn’t respond to key presses


Test further with another USB keyboard, to see if the issue persists. If not, this is likely due to a hardware issue with your keyboard and may need serviced or replaced.

Mac usb keyboard not responding


In case it persists with multiple keyboards, then we'd boot to safe mode and test it out there: How to use safe mode on your Mac


Depending on the results in safe mode, use sections, 'If the issue continues in safe mode' and 'If the issue doesn't continue in safe mode' to resolve it.


Hoping this helps out, take care!

Apr 28, 2021 12:15 PM

Apple Extended Keyboard
Model no.M3501
ManufacturerApple Computer
Product familyApple Keyboard
KeyswitchesAlps Electric
InterfaceApple Desktop Bus
IntroducedMarch 2, 1987 (original)
October 15, 1990 (Extended Keyboard II)
DiscontinuedOctober 15, 1990 (original)
March 14, 1994 (Extended Keyboard II)
PriceUS$163

The Apple Extended Keyboard (AEK, model M0115) is a keyboard that was first sold separately alongside the Macintosh II and SE starting in 1987. It was replaced in 1990 by the Apple Extended Keyboard II (AEKII, model M3501) which was pre-packaged with Apple Professional Desktops starting with the Macintosh IIsi.

Both versions were very similar, differing primarily with the addition of adjustable height legs in the AEKII and other minor changes. Both used Apple Desktop Bus (ADB) to connect to the host computer, with ports on either side to allow daisy chaining of another input device, typically a computer mouse or trackball.

The move to USB connections starting with the original iMac led to the introduction of new keyboard designs using rubber dome switches rather than Alps Electric switches. This, in turn, has led to a market for 3rd party keyboards that replicate some of the AEK feel, with Matias' line of Tactile Pro and Quiet Pro keyboards perhaps being the most notable.

Unique features[edit]

Usb

Mac Usb Keyboard Not Working

Among the features that make this keyboard unique are:

  • A separate power key using a different key cap.
  • Caps Lock Key that physically locks down when activated, considered to be better for touch typists.
  • Alps Electric Co. brand mechanical key switches, credited for their good sound and feel.
  • Large spacing between keys, especially the top function keys and others.
  • The width of the keyboard matches the width of the Macintosh II.
  • The height allows it to fit under the 'chin' of the Macintosh SE.
  • Two small cylinders project vertically from the top of the keyboard on either side of the function keys. These were used to hold templates with application-specific key guides.

Design[edit]

This side view of the Extended II shows its S-shaped upper surface, one of the two ADB ports, the deep serrated case which can rest on the desktop, and the single wide support leg that angles it upward.

The original Apple Extended Keyboard's case was sloped upward towards the rear so that when viewed from the side it formed a continuous convex curve. The case extended downward to sit on the desk, so it provided considerable internal volume. The case also had a significant amount of empty space at the rear, behind the top row of keys. This made for a relatively large and heavy case. The plastic of the case shell below the keyboard section on top was serrated, a common detail found on many Apple products of the era.

Unlike previous Macintosh keyboards, the key layout was very similar to the IBM PC AT's keyboard, in order to improve usability of MS-DOS programs (run via emulation or coprocessor board).

The II used an updated design that looked like a backward S when viewed from the side, starting relatively flat to the surface, sloping upward through the section where the keys were situated, and then flattening out again at the back where the function keys were placed. The case did not extend down under the keyboard as much, instead, it was raised off the desk by an adjustable foot at the back. This design was lighter than the original at 3.75 pounds (1.70 kg) but otherwise similar in size.

The design patent for the Extended Keyboard II (D335,228) was filed on November 15, 1990.

In 1988 Apple Ireland commissioned Design ID, an industrial design consultancy based in Limerick, to assist with the development of the Extended Keyboard II. Original concepts were by Bryan Leech and Peter Sheehan. For the final proposal quieter key mechanisms were sourced, tested and specified, an adjustable foot was incorporated in the base and the keys were positioned to conform to European ergonomic standards. The ‘S curve profile’ matched the curving terraced key layout and was central to delivering the ergonomic improvements - aesthetics and function in a simple visual gesture.

The first working prototype of the Extended Keyboard II was produced at Design ID by Richard Howe, Donal Ryan and John Fitzgerald.

Steven Peart of frogdesign was responsible for supplementary industrial design work and DFMA (Design for Manufacture and Assembly). Dexter Francis (Apple Peripheral Products Group) was the Apple in-house project lead/product designer.

See also[edit]

References[edit]

Imac Keyboard Not Working

Mac Usb Keyboard

Mac Usb Keyboard And Mouse

External links[edit]

Mac Usb Keyboard Types Wrong Letters

Retrieved from 'https://en.wikipedia.org/w/index.php?title=Apple_Extended_Keyboard&oldid=1047869358'
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