Cherry G84-4400

Cherry ML4400

Model no.	ML4400
Part number	G84-4400*
FCC ID	GDDG84-4400
Manufacturer	Cherry
Product family	Cherry G84 Series
Features	Integrated numeric keypad with keypad lock
Layouts	Modified ISO and ANSI
Keyswitches	Cherry ML
Keycaps	Pad-printed ABS
Interface	PS/2
Power draw	28mW

The Cherry ML4400, better known by the G84-4400 article number prefix, is a family of Cherry ML keyboards with integrated two-button trackballs.

Description

The cable terminates in two PS/2 plugs, one each for keyboard and mouse. The trackpad buttons hinge and the bottom, with the intention that they be pressed at the centre or the top.

The right-hand side of the alphanumeric area behaves as a numeric keypad with the function key held. Pressing Fn+F11 enters pad lock state; in this state, holding Fn will cause the keys to trigger their normal alphanumeric characters.

Some G84-4400 keyboards use a trackball module from Logitech (pictured); the alternative module is not visibly branded.<ref>Deskthority — Cherry Keyboard parts - First batch</ref> The Logitech module uses ZIPPY microswitches for the two buttons.

The keyboard is made in white and black versions. The key pitch is 18 mm.

Disassembly

The case is secured by nine screws; these are not too difficult to remove, but can be quite hard to re-insert.

Gallery

G84-4400PPAGB/01

A new-in-box UK ISO ML4400.

Exterior

• 
  Front
• 
  Left-hand side
• 
  Right-hand side with trackball and five status LEDs
• 
  Rear
• 
  Label
• 
  Keyboard and trackball plugs

Switches and keycaps

• 
  Pad-printed legends
• 
  Classic (short-form) ML switches
• 
  ML switch detail
• 
  Stabiliser wire and inserts
• 
  Posts in the space bar make use of the holes in the inserts

Interior

• 
  Logic and trackball compartment
• 
  Trackball buttons (inside view)
• 
  Keyboard controller
• 
  Trackball compartment
• 
  PCB (rear view)
• 
  PCB is tethered by a ribbon cable and earthing strip
• 
  Logitech trackball module
• 
  Rear of trackball module

References

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