Generic CB423A 256MB SDRAM Printer memory module, Compatible with HP Laserjet P2015, P2015D,  P2015DN,  P2015N,  P2015X,  P3005 (Q7812A),  P3005D (Q7813A),  P3005DN (Q7815A), P3005N (Q7814A),  P3005X (Q7816A)

144-pin form factor

HP 512MB 200p PC2-4200 CL4 8c 64x8 DDR2-533 1Rx8 1.8V Printer Memory 373120-001, 412359-001, 435770-001, 504599-001, CC411A, CC411AX, EE686A, KE678AA, PE831A, PE831ETR, PE831UT,CC411-60001

Kingston 256MB SDRAM memory module, Compatible with HP Laserjet P2015, P2015D,  P2015DN,  P2015N,  P2015X,  P3005 (Q7812A),  P3005D (Q7813A),  P3005DN (Q7815A), P3005N (Q7814A),  P3005X (Q7816A)

144-pin form factor