Lenovo C345
Only one machine has reported its memory so far, so this answer rests on a single example. Check the label or open the panel before you buy.
Yes. 2 slots, up to 18 GB seen working.
It takes DDR3-1066 laptop-size sticks (SO-DIMM).
- Slots
- 2 SO-DIMM slots
- Type
- DDR3-1066 204-pin SO-DIMM
- Most seen working
- 18 GB in the one machine reported
- Firmware says
- 18 GB maximum
- How sure
- 1 of 1 report show this layout
Worked out from 1 hardware report of this desktop. Sources and method. Updated 10 Nov 2026.
Check the drive you have.
The reports don't show this model's drive type yet. Look at the drive in it: a 2.5-inch box, about 7 by 10 cm, is SATA. A small stick is M.2, and its label says NVMe or SATA and its length (2230, 2242 or 2280).
- Drive type
- Check your current drive
How to tell a drive's type. Sources and method. Updated 10 Nov 2026.
Illustration Check the power rating on its label.
We don't have this model's power rating. Some all-in-ones run from an external adapter and others have the supply built in; the rating is on the adapter or on the label at the back.
- Rating
- On the supply's label
How to read a power supply label. Sources and method. Updated 10 Nov 2026.
Illustration Questions
Can I upgrade the RAM in the Lenovo C345?
Yes. 2 slots, up to 18 GB seen working. It takes DDR3-1066 laptop-size sticks (SO-DIMM).
What type of RAM does the Lenovo C345 use?
DDR3-1066 laptop-size sticks (SO-DIMM, 204-pin).
How much RAM can the Lenovo C345 take?
Machines in the reports run up to 18 GB. That matches the 18 GB maximum the firmware reports.
Is this my desktop?
Check the label on the bottom. It should say C345, and the type code starts with 4751.