title: Key 42 (USB HID codes)
body: <p>Can anybody explain what a key with position 42 on AT-101 keyboard is? This key has Usage ID 50 (dec) in USB specification. </p>
  
  <p><a href="https://i.stack.imgur.com/JYTyo.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/JYTyo.jpg" alt="IBM keybdtech"></a></p>
  
  <p>On my AT-102 keyboard it looks like Backslash key, but Backslash key is located at position 29 here and has Usage ID 49.</p>
  
  <p><a href="https://web.archive.org/web/20180827225742/http://www.usb.org/developers/hidpage/Hut1_12v2.pdf" rel="nofollow noreferrer">Hut1_12v2.pdf</a> (page 54)</p>