However, there are 4GB of RAM soldered to the motherboard. On the bright side, you can see one RAM SODIMM slot, that according to Lenovo can fit up to 8GB of DDR4 memory. 3. Crucial Memory and SSD upgrades - 100% Compatibility Guaranteed for lenovo ideapad - FREE US Delivery Memory and storage. Additionally, you can find a single M.2 slot, which supports PCIe x4 drives with lengths of 42mm and 80mm. Here's the hardware you need and how to get the job done. The Lenovo IdeaPad Flex 14 is available in quite a few configurations, and for improved performance, you can upgrade the RAM. Memory Upgrade for Lenovo IdeaPad 3 15IIL05 Laptop, Upgrade IdeaPad 3 15IIL05 Memory with 100% compatible 3 15IIL05 Lenovo Laptop Memory RAM modules from memorystock.com.