|Item model number||B2M-00012|
|Item Weight||3.9 pounds|
|Product Dimensions||21.2 x 11.2 x 3.3 inches|
|Item Dimensions LxWxH||21.2 x 11.2 x 3.3 inches|
|Batteries||2 AA batteries required.|
|Is Discontinued By Manufacturer||No|
|Date First Available||August 22, 2012|
Microsoft B2M-00012 Natural Ergo Keyboard 4000
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|Sold By||widgetree||Triplenet Pricing INC||Perixx USA||Amazon.com||Amazon.com|
|Are batteries included?||No||—||No||Yes||Yes|
|Are batteries required?||No||No||No||Yes||Yes|
|Connectivity Technology||Cable||Wired||Wired||Bluetooth, USB||Wireless|
|Hardware Interface||USB||—||USB 2.0||—||USB|
|Item Dimensions||21.20 x 11.20 x 3.30 inches||10.33 x 2.39 x 19.20 inches||18.92 x 9.20 x 1.72 inches||9.17 x 17.95 x 1.89 inches||18.90 x 2.90 x 9.90 inches|
|Item Weight||3.90 lbs||2.25 lbs||2.28 lbs||2.56 lbs||3.05 lbs|
Microsoft B2M-00012 Natural Ergo Keyboard 4000. Hard Drive Space 60 MB free (Install 100 MB) (Windows-based computer) and 30 MB free (Install 30 MB) (Macintosh-based computer).
Top reviews from the United States
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I re-installed the natural keyboard and no pain. I've been using these at home and at my computer workstation at work ever since. I'm now 66 years old and have no wrist discomfort after using computers daily since 1983.
This thing is a required tool for all my computers - even when using a laptop.
EDIT: upgraded to two stars because the keyboard works with my iMac with no issues.
Only thing that could be better is if it came in a wireless model (the MS Ergo wireless keyboards are good, but they changed the form factor of the board. It's *close*, but not 100%).