Difference between revisions of "Category:X220"

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(Features)
(Notes: headphone jack wiring)
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**Disabling the BIOS setting "USB UEFI BIOS Support" disables *all* USB booting, ie, both UEFI and legacy BIOS.
 
**Disabling the BIOS setting "USB UEFI BIOS Support" disables *all* USB booting, ie, both UEFI and legacy BIOS.
 
* Maximum DDR3 speed might depend on the BIOS version, some report working PC3-14900 speeds (1866 MHz).
 
* Maximum DDR3 speed might depend on the BIOS version, some report working PC3-14900 speeds (1866 MHz).
 +
* The combined headphone/microphone jack is a 4-pin TRRS connector and is wired as per [http://en.wikipedia.org/wiki/Phone_connector_(audio)#TRRS_Standards CTIA/AHJ] standard (tip - left, ring1 - right, ring2 - ground, sleeve - mic). Which means, it is compatible with most modern cellphone headsets (including Apple); however, it is not compatible with older Nokia and Samsung headsets wired as OMTP.

Revision as of 23:40, 1 July 2013


ThinkPad X220

This page gives an overview of the ThinkPad X220.

Features

ThinkPad X220

Resources

Notes

  • The CPU speed will be throttled back to 800MHz if the machine is run on the 65W AC adapter with no battery installed. To avoid this throttling
    • run on a 90W AC adapter, or
    • install a battery pack.
  • It's possible to use a mSATA SSD within the second MiniPCI Express slot.
  • On booting:
    • The X220 cannot/will not boot GPT disks using Legacy BIOS, you must setup UEFI.
    • The X220 will not boot /efi/*/*.efi unless "signed"(?) into BIOS, you have to copy it to /efi/boot/bootx64.efi.
    • Disabling the BIOS setting "USB UEFI BIOS Support" disables *all* USB booting, ie, both UEFI and legacy BIOS.
  • Maximum DDR3 speed might depend on the BIOS version, some report working PC3-14900 speeds (1866 MHz).
  • The combined headphone/microphone jack is a 4-pin TRRS connector and is wired as per CTIA/AHJ standard (tip - left, ring1 - right, ring2 - ground, sleeve - mic). Which means, it is compatible with most modern cellphone headsets (including Apple); however, it is not compatible with older Nokia and Samsung headsets wired as OMTP.

Pages in category "X220"

The following 63 pages are in this category, out of 63 total.

4

7

B

C

D

E

H

I

I cont.

L

M

O

P

S

T

U

V

W

X