Keystron 256MB DDR2 144pin 16-bit Memory Upgrade for Brother Laser Printer MFC-8510DN, MFC-8710DW, MFC8810DW, MFC8910DW One (1) 256MB DDR2 144pin 16-bit memory upgrade Part#: HL533/256 100% compatible with lifetime replacement warranty Manufactured by Keystron, LLC Keystron is a registered trademark of Keystron, LLC