I got a new corporate laptop, the X240 which was a replacement of the X230, and it was not clear at all that it was mounting only one memory slot. That was so sad. The other brands we have, ultrabook as well, are equipped with dual memory slots to have at least a maximum of 16Gb. That was very unusual to see from Lenovo. This model has a single SODIMM socket, which supports up to 8GB of RAM (PC3-12800 DDR3L SDRAM 1600MHz SODIMM). The CPU does not support more than 8GB of RAM per SODIMM module. Battery life is an estimated maximum. Actual battery life may vary based on many factors, including screen brightness, active applications, features, power management settings, battery age and conditioning, and other customer preferences. But nonetheless I was thinking about it. The x240 can't use more than 8gb of ram due to a chipset limitation. Interestingly, I've read that the limitation isn't that the chipset can't use more than 8gb of ram, it's that it can't use more than 8gb per slot. Meaning that if you had two ram slots, you could run two 8gb sticks. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.

RAM upgradability

This model has a single SODIMM socket, which supports up to 8GB of RAM (PC3-12800 DDR3L SDRAM 1600MHz SODIMM).

The CPU does not support more than 8GB of RAM per SODIMM module. In particular, Linux and Windows fails to boot, and MemTest86+ crashes, when using a 16GB SO-DIMM module, model IMM2G64D3LSOD8AG-B15E from Intelligent Memory (which does work in a ThinkPad X250).

Disassembly

Any internal component replacement or upgrade (including hard disk and expansion cards) requires opening the back cover. Keyboard replacement requires full assembly and disassembly of the system board, and fresh thermal paste for the CPU heatsink.

Opening the case involves two stages:

• Opening a handful of screws (these have tiny retainer rings made of transparent plastic; be careful not to drop them when removing the back cover).
• Carefully prying apart dozens of little fragile plastic latches. This requires a plastic case opening tool to avoid damage (a metal screwdriver will nick and scratch the plastic).

Key mapping

This model has a 6-row keyboard, where the F1 through F12 share the same top-row physical keys with special functions keys (volume, brightness, etc.). By default, the top-row keys invoke the special functions, and require Fn keypress to invoke the usual F1 through F12 functions. To switch the role and have the top-row keys default to F1 through F12, enable Fn-Lock mode (by pressing Fn+Esc).

Moreover, End and Insert share the same physical key. When Fn-Lock is activated, the key default to Insert, and End is invoked as Fn+Insert, which many users find inconvenient. To switch the End and Insert functions, in modern Linux distribution, add the following in a new file /usr/lib/udev/hwdb.d/61-ThinkPad-X240-keyboard.hwdb:

Then run:# udevadm hwdb --update

Thinkpad X240 Slot Ram Charger

(The keyboard:... line matches /sys/devices/virtual/dmi/id/modalias, and the hex scancodes are found using # evtest /dev/input/by-path/platform-i8042-serio-0-event-kbd . )

Resources

Resources (by Lenovo)

Other Documents

Pages in category 'X240'

The following 21 pages are in this category, out of 21 total.

Thinkpad X240 Slot Ram 1tb

Thinkpad X240 Slot Ram Drivers