XO B4

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Beta test model BTest-4, also known as B4.

See Beta Test 4 Systems

Identification

  • labels under battery include "B4 - TEST SAMPLE",
  • hinge white,
  • no keyboard LEDs.

Restrictions

  • electrical system defects, while running Q2D05 firmware, see #1835, #1752, #4476, #4479,
    • occasional crashes, made worse by suspend and resume, if battery low (#1835),
    • WLAN USB hangs, made worse by suspend and resume, (#1752, #4476),
    • DCON power cycling crash, (#4479),
    • rare crashes during suspend and resume, (#1835),

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