Lenovo T420i manual DIMM in the slot under the keyboard

1090 DIMM (in the slot under the keyboard)

For access, remove these FRUs in order:

•“1010 Battery pack” on page 63

•“1050 DIMM slot cover” on page 69

•“1080 Keyboard” on page 73

Note: Your computer has two DIMM slots: one under the keyboard and another on the underside of the computer. If you install a DIMM in only one of the two slots, install it in the slot located under the keyboard.

Removal steps of DIMM (in the slot under the keyboard)

Chapter 8. Removing and replacing a FRU 77