Compatible with Okidata OKI C330dn, C530dn, C610cdn, C610dn, C610dtn, C610n, C711dn, C711dtn, C711n.. Specifications: Size - 512MB Pins - 144 pins ECC - no Registered - no Form Factor - SODIMM Pins - 144 pins ECC - no Registered - no Form Factor - SODIMM