Lenovo T490 - RAM specifications
The Lenovo ThinkPad T490 supports a maximum of 48GB of RAM. It has two DDR4 SO-DIMM slots that can support up to 16GB of RAM each, and there is also an additional soldered 16GB of RAM onboard. So, the maximum RAM configuration for the T490 is 16GB onboard plus 16GB in one slot plus 16GB in the other slot, for a total of 48GB.
RAM specifications for Lenovo T490
| Total memory slots | 2 (1 not upgradeable) |
| Maximum RAM | 48 GB (up to 32 GB in user accessible slot) |
| Memory type | DDR4 SDRAM |
| Form factor | SODIMM (Small Outline Dual Inline Memory Module) |
| Recommended RAM clock speed | 2400MHz (PC4-19200) |
| Voltage | Low - 1.2V |
| Number of pins | 260-pin |