Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I have an old pfsense router and want to see what type of memory it supports (e.g. DDR2 240 pin... PC100... DDR... etc). Is there a command that will show me this?

I know I could just open the box to look but I don't want to introduce downtime unless I have to.


share|improve this question
up vote 6 down vote accepted

dmidecode will give you the details of what's currently installed in the box:

Handle 0x0015, DMI type 17, 27 bytes
Memory Device
    Array Handle: 0x0014
    Error Information Handle: Not Provided
    Total Width: 64 bits
    Data Width: 64 bits
    Size: 1024 MB
    Form Factor: DIMM
    Set: None
    Locator: J1MY
    Bank Locator: CHAN A DIMM 0
    Type: DDR2
    Type Detail: Synchronous
    Speed: 800 MHz (1.2 ns)
share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.