Giá: Liên hệ Thiết bị tường lửa SONICWALL TZ270 SonicWall TZ270 Appliance + 02-SSC-6637: 24X7 SUPPORT FOR TZ270 1YR Includes 24x7 telephone, email and Web-based Support, Software and firmware updates, Advance Exchange hardware replacement, access to electronic Support tools and moderated discussion groups.